Half the price as the competition! But are they really up to spec?? SVBony SV227 5nm SHO Filter Set!

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[@CuivTheLazyGeek]

My Patreon: www.patreon.com/cuivlazygeek My Merch Store: cuiv.myspreadshop.com/ SVBony SHO Filter set: bit.ly/4aGhQQI (use coupon Cuiv20 for a further $20 dollars off!) Or on Amazon: amzn.to/3KbJFVG (no coupon there :p) Antlia SHO 4.5nm Filter Set: bit.ly/4ao2b7O (Agena) Optolong SHO 6.5nm Filter Set: bit.ly/3WOxWUc (Agena) or bit.ly/4dNTqXu (HPS) Crazy Antlia 2.5nm Filter Set: bit.ly/3QU5hth (Agena) or tinyurl.com/2wz8meus (FLO) Amazon affiliate: amzn.to/49XTx01 Agena affiliate: bit.ly/3Om0hNG High Point Scientific affiliate: bit.ly/3lReu8R First Light Optics affiliate: tinyurl.com/yxd2jkr2 All-Star Telescope affiliate: bit.ly/3SCgVbV Astroshop.eu Affiliate: tinyurl.com/2vafkax8

[@chamithathukorala1985]

Can you try zwo new narrow band set please

[@philipfontaine8964]

Cuiv , your opinion and the testing you do are valuable to everyone in the hobby. You are appreciated, keep it going. I wish you were here for a night or two, the things I would learn.., yes the learning curve will be greatly reduced!

[@CuivTheLazyGeek]

Thanks so much Philip! This is why I do what I do so it is very much appreciated!

[@izelennkhan]

It's just SO GOOD to have someone, especially someone with your reach, doing those tests for the community!

[@CuivTheLazyGeek]

Thank you!

[@wesleydonnelly2141]

For the money, these filters are a no brainer Cuiv! I'm 100% SOLD!! Thanks again for providing really useful, informative vid's Cuiv, you're the man!! 👌👍

[@CuivTheLazyGeek]

Always happy to help :)

[@fabiano.maioli]

Thx Cuiv. Your videos are the most useful of the entire community! As a geek as well, I love them. Always full of new informations. Keep the great job, man!

[@CuivTheLazyGeek]

Thanks Fabiano!

[@jonrbryan]

I just got first light with my SvBony SV220 Dual-Band filter two days ago (the night before the full moon) on the Trifid Nebula. For a first attempt with dual band I got a very nice result. Last night I shot the Pelican, and I'm processing it right now. The filter is going to open up a lot of possibilities, especially since I have a bright glow from Albuquerque to the west that really kills dim targets in broadband below about 30 degrees. I have a lot to learn to get the most from it, but that's part of the appeal of this hobby.

[@CuivTheLazyGeek]

That's great to hear, glad it's working out well for you!

[@larryhibbitts2099]

Cuiv, I love when you do these kind of reviews. I learn so much! And I save money by not buying stuff that wouldn't help me. Thanks as always!

[@CuivTheLazyGeek]

Always a pleasure! Thanks for the feedback!

[@grozdaki]

Hello Cuiv, I saw your great review about these filters. Everything sounded very promising. So I bought them a month ago but just last night I got the chance to test them. I pointed the telescope to the Horsehead nebula. And there is it the result: OIII filter makes a terrible big hallo on the bright stars. Well this is acceptable as you already mentioned it. Then I was really surprised by the HAlpha filter. EDITED to be precise: The HII filter makes a big hallo too slightly fainter than the OIII filter's one! Well, what a surprise :-(. Didn't have time to test the SIII filter. Happy new year!

[@CuivTheLazyGeek]

I think I show that halo in the video, is it worse than what I had??

[@grozdaki]

@@CuivTheLazyGeek Hello, I rechecked my images and the video you posted. The results are similar. OIII has a hallo comparable to your example. The HII made hallo only on the Alnitak star (my sample is with a smaller sensor - the ASI183MM Pro camera). By some reason I eventually had forgotten that HII filter also makes a hallo and was initially surprised while not expecting it. So your review seems to match my results.

[@Jcorban08]

Thank you, Cuiv, for the interesting video! Your detective work on the filter manufacturers is very helpful and appreciated.

[@deltacx1059]

Would be cool if svbony would make a good mount to under cut the others, the current manufacturers are out of control.

[@christianvontotth6002]

Maybe you want to look for one of the UMi's

[@deltacx1059]

@@christianvontotth6002 the Umi 17 has been mentioned to me but even it is very expensive.

[@CuivTheLazyGeek]

Would be nice! Altough as Christian mentions, UMi has got some SWG at a decent price :)

[@deltacx1059]

@@CuivTheLazyGeek do they make any worm mounts?

[@jasonzhang3540]

@@deltacx1059no

[@volvotl22]

I own a 220 dual pass filter and was so impressed with it I sent them a sample pic and a link to your review. My first ever filter was a UHC clip in from them and later bought a 2" version as I do place mine on the nose of the flattener, they are good, but not great, but crazy cheap. Have now swopped to an Optolong L eHance for that purpose, is a little sharper and does not kill blues as much.

[@astrojudebob]

Thanks for your help. I will consider your results on my next upgrade.

[@CuivTheLazyGeek]

My pleasure!

[@astrofromhome]

Thanks a million for the test. I think when I am menthally ready to switch to a mono camera I think these filters are for me. 😁 Greetings from Germany, even under a new name. 😄

[@CuivTheLazyGeek]

Awesome! Nice new name, and enjoy mono once you make the switch!

[@Apagadorable]

Thank you again Cuiv 😊 Always a pleasure to watch your video!

[@CuivTheLazyGeek]

Thank you!

[@KevinRudd-w8s]

Astro photography is probably one of the most expensive hobbies out there. And I have found that you generally get what you pay for. Cheap gear will usually work, but not as well as the really expensive stuff. At the end of the day you pay your money and make your choice. So long as people are aware that they are not buying a premium product but are really happy with the results they get from it I don't see the problem, especially if it enables people who may not be able to afford premium prices to enjoy the hobby. I'm sure many people will be happy with these filters.

[@CuivTheLazyGeek]

Yep that's pretty much it

[@TevisC]

HA, NOPE!! Horses!!! 3 ton hay per year at $300 ton each $900+ year Every 4 to 6 weeks Farrier at $80-200 (trim or shoes) Property with a barn or boarding.. $Land + Barn $$$ or $500+ month ..$6,000+ year Barn maintenance.. damn things eat boards like candy! $1000- 4000 a year! Paddock costs.. $$$$$$ A horse trailer $10,000 to +$$$$$$$ for living quarters... A sufficient size Truck or SUV to tow horse trailer $25,000 - $80,000 $15-25 a class to enter into shows Fuel costs for transportation $1000 minimum.. Insurance $$$$$ Shavings for stalls $$$ Clean stalls every 1-2 weeks Tractor to clean stalls $15,000+ And a massive demand on your time.. twice a day feed and water.. Astrophotography is CHEAP!!!!!!!!!!!!!

[@miguelmorales9667]

@@TevisC Horses are a hobby? What happens if you don't feel like doing your horse hobby for a couple of weeks. Horses are not a hobby, horses are a seven days a week job.

[@KevinRudd-w8s]

@@TevisC If you lived where I do in the UK you would have to have a very highly paid job or have an extremely large bank account to even think about spending money like that. Everything is relative, if you can afford to spend that sort of money then astro photography probably would seem cheap For most people in the UK it is very expensive when you see how much money they have left after paying all the essential bills particularly to rip off utility and energy companies, mortgage lenders and Landlords.

[@ferenc-x7p]

Astrophotography is not the most expensive hobbies by far! Try building hot rods or motorcycles or boating! Even fishing can get of hand, starting with a $46k fishing boat and pro-rods going for $1K each and I haven't mentioned lures and accessories, trailers and a necessary truck to tow it! Even regular landscape/nature/wedding photography can be much more, with camera lens each costing thousands of dollars!

[@ferenc-x7p]

Great! I love when someone puts something on the market for cheaper and all the others will have to lower their prices! Now, Svbony has to just offer these in more sizes, like 36mm unmounted and 1.25". Also if they could offer more mono cameras, like a cheaper version of the IMX571 mono sensor and also a 4/3rd mono camera and they would win a customer here!

[@stezoaks]

SVbony makes exceptional products for the price. I own their two 80mm & 122mm APO refractors and they are awesome.

[@CuivTheLazyGeek]

That's awesome to hear!

[@LogansAstro]

Very interesting video and great to see the "real" specs on these filters. They are a great price but those halos would drive me nuts.

[@davewilton6021]

You're spot on with your comments here. The difference between actual performance and published specs, which isn't terrible, is more than made up for by the price difference. But you get what you pay for with the halos. Still, a great bargain. I had Baader 7nm filters which were more expensive and had a similar halo in OIII. (I now use Antlia 3.5nm, which are great but pricey.)

[@CuivTheLazyGeek]

Exactly - it's a good bargain, although technically SVBony is lying about their specs...

[@_TriffiD_]

Well, another question would be how good and durable the coating of those filters is. There is a reason for the high prices of excellent filtersets that lies beyond the idea of moneymaking. I went for filters by Astronomik. Not overly expensive with reasonable bandwiths and well manufactured I have used them for quite some time now.

[@jimcarter2092]

I have used svbony products. Mostly accessories like adapters,lens warmers, and some lower cost filters, I have their guide scope and camera, and a $150.00 planetary camera for sun and moon, until I finally bought a zwo cooled cam I recently received their 2 inch filter Drawer this things built very well. So I ordered another. Because of Their lower prices I check their products and reviews first before buying elsewhere I've had no problems so far

[@CuivTheLazyGeek]

Exactly - they have functioning stuff for cheap. It's really good for the hobby!

[@cratervanawesome]

As you pointed out the price is usually more about all the quality of glass/extra coatings manufacturers are using. I'm upgrading from an ASI183GT with ZWO filters (which have been fine for what they are) to a Player One Poseidon-M (APS-C 571) so I have to get a new filter wheel and filters (36mm) and after doing a ton of research am going with the Astronomik filters. Deep Sky RGB set, L2 luminance, and their 6nm narrowband filters. Seems to be the ultimate balance between price and performance. Plus is that they'll all be parfocal as well, or so they claim.

[@CuivTheLazyGeek]

Astronomik have great reputation!

[@marckeith8967]

I have these including the dual band pass filter. These are great value for money, I can forgive 6nm as my previous mish-mashed set was 10nm-12nm. There is a lot to say for parfocal filters.

[@CuivTheLazyGeek]

Yep, I agree

[@Sifugord]

Hi Cuiv, Very interesting review. These filters at this price point may be ideal for someone who is just taking a step into narrow band imaging. I’m wondering if you might be able to do a similar test in a side by side comparison with the major filters? This would be a big help when deciding which way to go to balance price vs performance. I’m just moving from OSC to mono and there are so many choices with stated performance levels that, in some ways, you’re just rolling the dice without reviews like yours. Thanks for all that you do! Gord

[@CuivTheLazyGeek]

I wish I could, but I'd need to get my hands on all the major filters.... :D I do have an older video where I do test all of my own filters: kzbin.info/www/bejne/sKG9k6VpatCal68

[@Sifugord]

That’s quite true. It would be interesting though. Also, to test filters using different systems. I believe you use Hyperstar, as do I, and filters will perform differently with fast systems. I’ll check out your earlier video for some background information. I think that the Antlia filters are a good option for Hyperstar. Some of the other filters which don’t quite meet their advertised specs would be a riskier option for Hyperstar. Thanks again! :-) Gord

[@toneotoneo]

probably I would invest in a 3nm OIII only as Cuiv pointed out the red wavelengths are less affected by light pollution .. maybe 5nm would be enough ...

[@snakegodtod164]

Can u explain dual band filters and how to use them.

[@CuivTheLazyGeek]

I have many videos on the topic actually!

[@snakegodtod164]

Oh ok thx

[@TevisC]

To mount a filter to the CC, I think you could reach in from the front of the scope to put it on. Have it horizontal to prevent dropping it down the tube.

[@CuivTheLazyGeek]

True, that's likely doable, still a bit painful especially for a mono setup...

[@TevisC]

Thanks for the review! What a public service :)

[@CuivTheLazyGeek]

Always my pleasure!

[@UrbanAstroLA]

Thank you for testing these. The spectrographic analysis is really great and this is a true bargain for 6nm width. My concern with SVBony filters was if they had any passband leakage -- how did near IR and UV parts of the spectrum look on an expanded graph?

[@CuivTheLazyGeek]

Unfortunately I don't have the capability to check in NIR and UV - but they seem opaque on camera to my UV lamp and remote control LED.

[@UrbanAstroLA]

@@CuivTheLazyGeek no worries! I appreciate you highlighting solid objective testing methodologies; I've been interested in making a spectrometer using a diffraction grating for some time and your testing and use of these kinds of devices pushed my curiosity to the next level -- I will build one!

[@namorandy]

Hi Cuiv, I'm amateur and my setup is from SvBony 503 80mm/f7 , SvBony field flattener connect with Canon 1100 Da, Az GTi WiFi go-to mount,Asiair mini.I buy OIII filter when I see this new set in website and first target what I working on is NGC 6543 Cat's eye nebula,Moon 94% 48/300s and I was really surprised. Duo narrow band SvBony HaOIII I have good OIII signal but Ha is very poor 32/300s. Thanks for review 👍

[@sianikolaou5440]

I love your torture tests and appreciate your dedication to this service in our hobby. I actually own 2 SVBony filters - a circular polarising filter I have used with my Newt and white light solar filter with no issue, and a UHC filter which I feel I need to test more to comment further. I can't recall but have you tested the ZWO filters, especially the 7nm narrowband?

[@CuivTheLazyGeek]

Thank you! I haven't tested the ZWO filters, I may if I get the opportunity!

[@AsKyOdA]

Mr cuiv.. I would probably have another check from self purchased filter in the future as product sent by svbony for review have been internally reviewed, picked out of the many to ensure they are offering you the ‘best’ available option. I can assure you these filters are not subject to the lottery of narrowband quality selection but rigged to ensure you Win !! Still thank you for sharing all of the info :)

[@CuivTheLazyGeek]

I'm not so sure at all - the SV220 was purchased randomly and was basically the same: extremely well centered bandpasses although slightly wider than ideal (although still within the published margin of error). The filters arrived in a day from a warehouse in Osaka rather than from China (I doubt they have the capability to measure filters from their warehouses in Japan, and they most certainly don't have spectrums for each filter), and they're part of a set of three that bears the same S/N so it requires finding a whole set that has good specs. And of course their bandpasses are out of spec - a rigged selection wouldn't have had that issue imo!

[@TpfonPfon]

Thanks for the rewiev. Would be interesting to test the new Optolong 3nm SHO. Ist that planned?

[@CuivTheLazyGeek]

No plan for now!

[@abiosis007]

Svbony had realy great filters etc for acceptable prices!

[@AnotherAmateurAstronomer]

I have and use and like the SvBony 220 Dual Band filter for use on emersion nebula.

[@CuivTheLazyGeek]

Yep the SV220 is a good deal as well!

[@sjpp71]

I use the svbony duoband filter in one scope of a side-by-side setup ( 2 evoguides with qhy183c each) so a poor's man double rig!); the 2nd scope has a l-extreme filter. Beside a bit of halo in the svbony setup, I haven't seen any difference in the data (120s shots). At first I was thinking of getting a 2nd l-extreme, now I think it would be much better getting a 2nd svbony douband!

[@CuivTheLazyGeek]

That's awesome for a dual scope :) and glad you're enjoying the SVBony! :)

[@AndyofAstro]

I've been using svbony uvir cut filters and they are good, I've also got the 7nm filters which I need to test. Their general clamps and guide scopes are ok. I was an early tester on their 405cc (294c) sensor which is extremely difficult to use and when it came out it was not really ready as a viable product. The drivers have matured now, but it is really difficult to use. I wonder if it's my early version, as sometimes you see good pictures with them. Not sure if I'd buy more svbony kit as my astronomy adventure has moved forwards. I might be interested in a 571 sensor camera to test if they produce one, but haven't as yet.

[@CuivTheLazyGeek]

Interesting on the cameras - I hope they get better there too

[@Thomas-mn5ih]

@cuiv Cuiv, maybe I missed this but have you ever measure the Baader filters?

[@CuivTheLazyGeek]

Baader filters are the reason I bought the spectrometer in the first place - it was in a video a couple of years ago :)

[@Thomas-mn5ih]

@@CuivTheLazyGeek great what was the result?😉

[@brod5352]

I'd really like to see if adding the filter to the front of your Chroma corrector reduces or removes the Halos. I've got one of the Askar SII / OIII on order with Highpoint scientific since you did your video on them and I'm still waiting on delivery. But I prefer to have as few halos as I can. :0)

[@CuivTheLazyGeek]

I would need to test - but it's very impractical especially for SHO filters that need to be changed often!

[@rbrickproductions123]

I was just looking at these and wondering what cost cutting measures were taken. I kind of assumed the 5nm was too good to be true and probably closer to 7nm filters. But performed better than I expected! Will probably pick these up, trying to save some money on an APS-C mono setup!

[@CuivTheLazyGeek]

Yep it was overall pretty good :)

[@bmbaum]

How do you measure the FWHM? Are you actually fitting the data mathematically or is it just eye balled from the cursor readouts? I don’t recall if you’ve ever mentioned your method before, but it seems like the cursors aren’t high enough resolution to properly eye ball it

[@CuivTheLazyGeek]

First derivative to find the inflection point!

[@CuivTheLazyGeek]

And confirmed against eyeballing it. Believe it or not it's difficult to eyeball it wrong due to the steep slope of the curve

[@snakegodtod164]

very cool and informative vid thx. i love your chanel

[@CuivTheLazyGeek]

Thanks, glad this is helpful, appreciated!

[@stevensiwinski]

Any idea why their website states not to use the 5nm filters below F/5? I want to use them with my F/4 Newt.

[@ChristianSilvano]

Look up band shift

[@WilliFromEarth]

How does the spectrometer setup look like? What is the F# or better the angular range of the transmitted beam?

[@CuivTheLazyGeek]

No F#, just perpendicular - I show that in other videos.

[@B-Mike]

Can these filters be be used with color cameras?

[@ManuelRodriguez-tk4yd]

Es compatible este set de filtros con camaras ZWO ASI 294 MC Color ? Garcias!!

[@CuivTheLazyGeek]

It will work, but it's not optimal, they're designed for monochrome cameras

[@ManuelRodriguez-tk4yd]

@@CuivTheLazyGeek 👍 Gracias por la información.

[@bustedrav]

I'd be interested in testing the same filters bought anonymously, they could've sent you great examples of the filters, knowing they'd be reviewed.

[@CuivTheLazyGeek]

I'm not so sure at all - the SV220 that I purchased randomly and was basically the same: extremely well centered bandpasses although slightly wider than ideal (although still within the published margin of error). The filters arrived in a day from a warehouse in Osaka rather than from China (I doubt they have the capability to measure filters from their warehouses in Japan, and they most certainly don't have spectrums for each filter), and they're part of a set of three that bears the same S/N so it requires finding a whole set that has good specs. And of course their bandpasses are out of spec - a rigged selection wouldn't have had that issue imo!

[@utrr]

I understand that the actual measured value of SV227 is 6nm to 6.5nm. Can you find out the actual measured value of SVBONY's 7nm SHO filters? I own 7nm SHO but I am not sure if it is worth buying SV227. if the actual measured value of 7nm SHO filters is wider than 7nm, then it is worth buying SV227.

[@CuivTheLazyGeek]

I'd need to get my hand on a sample of the 7nm SHO filters first :)

[@SpaceRak]

for my its like 500-600 usd = pirce + taxes + other shit in shiping to ue. for comparison, it's roughly 70-80% of my salary

[@richardshagam8608]

Have you/can you measure these filters into the near infrared? Early on, I had purchased an Astromania brand Ha filter, which I discovered required use of a UV/IR blocking filter to avoid halos and ghosts. I've found a quick test for IR blocking performance is to put a filter between a cellphone camera and an IR TV remote control. (Check first that the camera responds to the IR remote). As for the SVBONY filters, I doubt that most SHO users will notice the slightly out of spec bandwidths.

[@CuivTheLazyGeek]

Interesting - no I don't have the capability to test in IR unfortunately... But the remote control test seems successful

[@deepskywatching4713]

Very good Cuiv, keep up your excellent work. Obe wiestion: . What about the focal point? Are the parfocal? BR Harald

[@aaronwilliams3949]

Did you put a primary mirror mask on your Carbonstar? I didn’t see the strange diagonal spikes that were there on your previous video.

[@CuivTheLazyGeek]

Well spotted ;)

[@user-dm2tr6zo7r]

Hello Cuiv. Thanks for the video. I personally also use quite a few svbony products, f.e. the svbony sv220 DNB filter. And I can confirm that there are no halos if you put then in front of the reducer. My question to you, with what optics did you test the filters. With your Newton? If yes it is probably faster than f5. Could that be also reason for the big halos, since svbony suggests to use them not faster than f5? Greetings from Germany.

[@CuivTheLazyGeek]

Hello! Yes with the Newt - but the F5 recommendation has more to do with narrow band passes and bandpass shift rather than halos!

[@turbo80lxcoupe]

Thank you for reviewing these.i just got my first mono cam and I was looking at these.for the money they dint seem bad but still leaning towards antlia

[@CuivTheLazyGeek]

You're welcome! If you have the budget the Antlia should be better in terms of bandpass and halos

[@jesuschrist2284]

Do they make a good light pollution filter for a skint noob with an unmodded dslr?

[@CuivTheLazyGeek]

There are some clip in filters that help, but Ha and SII will always be a problem on an unmodded DSLR...

[@jesuschrist2284]

@@CuivTheLazyGeek i better get a proper camera then :) thanks again for your videos

[@jesuschrist2284]

Could you move your filter drawer/holder to between scope and flattener?

[@shubinternet]

So, Cuiv brings up a good point - are narrowband filters really useful for color cameras? That’s a question I’m very interested in. Because otherwise, if you’re doing mono only, and capturing both RGB and SHO plus Luminance, that means you’ve got to make seven passes at the subject for each of those filters. But with a color camera, you could capture RGB in one go, and then maybe use a couple of dual narrowband filters to capture SHO. So, only three passes, for the same data on an RGB sensor instead of a monochrome sensor. Yes, lower quality due to the Bayer issue, but still useful I think.

[@saundby]

At the price, you could stack them in pairs to get narrower bandpass. The transmission would drop to 80% or a bit less, but what the heck that's just a few more subs. ;)

[@CuivTheLazyGeek]

Unfortunately that wouldn't work though! The bandpass of two filters stacked together (assuming good bandpass centering on both) would be equal to the bandpass of the narrower one and that's it :) You suggestion would only work with slightly offset bandpasses on the filters :)

[@DodgeAstro]

Hello Cuiv👋, I love the channel and find all your videos very interesting 👍 Is there a svbony light pollution fillters that you can recommend using with the Zwo Seestar S50 please?

[@CuivTheLazyGeek]

Thank you so much! The SV220 (for emission nebulae only) should work well in general on the S50

[@PEWannabee]

its not that Svbony filters are cheap, but their "competitors " are just overpriced.

[@CuivTheLazyGeek]

Probably - I have no idea of the manufacturing and testing process for the filters though, so no idea how much they actually cost to make!

[@PEWannabee]

@CuivTheLazyGeek can't speak for all of them, but I've seen many quaily deviations that I wonder how much these manufacturers actually invest in quality control.

[@stevesanacore7459]

These filters could make the option of going mono much more affordable.

[@CuivTheLazyGeek]

For sure! It's good that they exist!

[@okeania]

Can they be used in MC camera like 294?

[@chamithathukorala1985]

Can you try zwo new narrow band set please

[@CuivTheLazyGeek]

If I get the opportunity:)

[@qx3V45p]

I run the Antlia 3nm Pro. Halo's are pretty much identical to what you demonstrate. Ha and Oiii being the biggest offenders. Sii is clean.

[@CuivTheLazyGeek]

Really?? I thought Antlia would have fewer halos! Thanks for letting us know!

[@bronco_fv]

In a previous video you stated that filter are basically a lottery. Now, what are the chances that SVBony sent you a random set (although there are still flaws)? I’m pretty sure that they made very sure that they sent you the best ones they could find.

[@CuivTheLazyGeek]

Several indicators show this may not be the case: the SV220 that I purchased randomly and was basically the same: extremely well centered bandpasses although slightly wider than ideal (although still within the published margin of error). The filters arrived in a day from a warehouse in Osaka rather than from China (I doubt they have the capability to measure filters from their warehouses in Japan, and they most certainly don't have spectrums for each filter), and they're part of a set of three that bears the same S/N so it requires finding a whole set that has good specs. And of course their bandpasses are out of spec - a rigged selection wouldn't have had that issue imo!

[@Dennis-tf2cs]

I think most all Astrophotography equipment is WAY overpriced. They charge so much because "they can". We need more competition for all equipment.

[@CuivTheLazyGeek]

I agree! That's why I like testing and presenting some of the lesser known brands on the channel (I think I basically put Touptek on the map, and that helped a lot with some camera prices), because competition is good (tm)

[@yobb89]

i would not consider anything wider then 3nm for oiii in alot of lp, i own a set of chroma,s , i would consider antlia by just looking at the transmission specs and the price is alot cheaper then chroma or astrodon , premium filters are just a game changer and the anti reflection coatings are so much better , nothing worst then going down the rabit hole of trying cheap filters or coma correctors with some anoying trade offs with flaws due to lower price , you'll just want to upgrade later to something better

[@CuivTheLazyGeek]

I understand the point, although for high speed scopes 3nm isn't that great (even the preshifted filters seem to have trouble) - but even the Antlia filters are a very significant investment...

[@BrentMantooth]

Sometimes the source of the halo is not the filter - this section of a video I did shows how to calculate it and talk some about how the wavelength plays a role. kzbin.info/www/bejne/qKWpiWxomb94ldksi=Bpu-VXJNTgsAbTSE&t=709

[@BigBadLoneWolf]

I looked at these, and they are only available in 2" and 1.25", they are also not suitable for scopes lower than f5

[@CuivTheLazyGeek]

Lower than F5 will work fine, especially if the bandasses are consistently larger than advertized. I think they are being a bit conservative with bandpass shift. I wouldn't expect issues down to F3.5 or so (based on experience)

[@astrobert1254]

HI, I'd love to see a review of the SHO Filters from Toutpek. Cause now you can get the whole imaging train from the "Blue One". Mono-Cameras, Filter Wheels, OAGs, Guiding Cams, Autofocus and now even the glass!

[@dragbug100]

I don't even understand why they are as expensive as they are. They cost more then some peoples telescopes.

[@CuivTheLazyGeek]

I have no idea of the manufacturing and testing process for the filters though, so no idea how much they actually cost to make!

[@labtrade]

Why do Chinese manufacturers insist on lying when these things can be tested? Also these are made by Optolong for SVBONY.

[@CuivTheLazyGeek]

It's not just Chinese manufacturers - Baader has some horrendously bad filters out there. Do you have a source for the Optolong statement? I highly doubt that, as Optolong filters I've measured tend to have the opposite (and worse) problem: bandpasses are as narrow as advertised, but poorly centered.

[@EugeneRu777]

👍👍👍👍👍👍👍

[@TheCosmicGuy0111]

Woah

[@johnjewell219]

👏🐈‍⬛🇦🇺😎

[@nikasmo]

Yeah it’s cheap but not up to the specs but it’s twice as cheap. Sold to china af.

[@juniorocicat9573]

Take a break, your looking very tired.

[@CuivTheLazyGeek]

No more tired than usual (I have fairly chronic insomnia, but then that's been going on for years), but I think the overhead light isn't doing me any favors!

[@RetiredMillennial]

I see you got on the svbony bandwagon as well. 😂 I still haven’t used my 80 ED. I didn’t understand why are they not meant for colour cameras exactly though. Because they aren’t dual and it will take as much time anyway? Or is there some other reason?

[@CuivTheLazyGeek]

It's because it's mono band, so that means that if you're capturing Ha or Sii, only one fourth of the pixels on your camera are doing something useful. It's better with OIII, but still ..