Optolong L-eXtreme filter with a CHEAP DSLR camera for astrophotography - Is it a good idea?

[@WilliFromEarth]

Great vlog. Thank you. I am also using the L-eXtreme with my ASI294MC OSC. I can image very faint emission nebulas, such as the Dolphin Head Nebula, that are otherwise completely invisible from my moderately light poluted home. A word about the alleged „loss of photons“: H-alpha and O-III are emission lines. So *all* the „photons“ are emitted at those specific wavelengths. A narrowband filter will allow as much light (photons) from those emission lines as a no-filter set-up. The argument that you get „less photons“ is hence completely invalid. You block out all undesired light at all the others wavelengths. The narrower the line filter the better the contrast. Thank you for demonstrating this with great imagery. 👍😃

[@kamilkp]

Exactly! 😀

[@lupo2824]

Finally the information I needed to go with the l-extreme rather than the l-enhance. Thx a lot.

[@Butzemann123]

Thank you for this awesome work. What do you think of the 2000D in general? Right now i use the 1200D, which suffers from banding that is hardly to calibrate, even dithering cant fully compensate for it. The 2000D seems to be superior on paper, but maybe you have some comparison of the 2000D with older models?

[@geonerd]

How well does the Extreme cope with fast light cones? At significant incident angles, the filter's response bandwidth will be shifted to some degree.

[@kamilkp]

I don’t have any experience with that. But I’m aware of it and I think „Cuiv, the lazy geek” has some videos about this subject

[@ujjwaldatta6713]

Kamil, great video as usual my friend. I do have a few questions and would love to hear your feedback: 1. The L-extreme is usually used in a telescope or can it be used on the lens of any DSLR? Do their size depend on the size of the lens being used? Does it come in a clip-on version so I can simply place it in front of the sensor inside the DSLR? 2. The L-enhance is a clip-on right? 3. I have a full spectrum modified Canon EOS RP and I am currently using a Kase clip on LP filter specific for that camera, in front of the sensor. Would using the L-extreme or L-enhance for that particular camera make sense? 4. I also have an unmodified Canon EOS Rebel T5i. Should I get either of these narrowband filters for that camera? Should I use a clip on version if one is available for the L extreme or the L enhance clip on should be good enough? 5. I don’t have a telescope to use the L-extreme filter on it. If that does not have a clip on version based on camera type, what do you recommend? Thanks.

[@kamilkp]

1. I talked about it in the video 2. Mine yes, but they also do them for telescopes 3. The l-enhance clip in is only for APS-C DSLRs. They don’t make these for full frame mirrorless (yet!) 4. You can but the results will be mediocre with an unmodded camera 5. l-enhance

[@drkumarharaprasadmisra5562]

I m using with 3d printed adapter, 1.25 inch l extreme with Canon 200 d modded . It's excellent filter. I m from Bortle 4-5. So in 30 sec sub also Nebulae easily visible

[@davidletz9123]

Hi Kamil, perhaps you mentioned it in your video, but did you get these images using a star tracker, or a more "robust" mount? With a good polar alignment, what is the longest exposure you have gotten before star trailing began using a star tracker?

[@mrgreenfull3897]

Are CPL, Extreme and Enhance and other filters usable with Canon which has completely removed UV/IR filters in front of a sensor (full spectrum mod)?

[@kamilkp]

Not sure what a CPL is but the other ones: Yes

[@dw.in.michigan]

I just got my 2000D modified - full spectrum. I asked Nico Carver (Nebula Photos on KZbin) whether or not I need additional filters. I'll give a slightly more concise answer, but this is his information. You will want a filter of some sort because of IR bandwidth light - it creates a halo due to how different types of light focus at different distances. The typical UV/IR cut filters aren't a good option because the UV will somewhat negate the gain of the modification. He recommended to me a filter by Kolari - UV/IR cut with HA pass. Admittedly, I still have my training wheels on in all of this, so I was looking for something basic and less of an investment than these types of filters that Kamil is talking about. If you're interested in seeing Nico's response to my question, which was similar to yours, look at the comment section on video from about a month ago about different types of filters, and look for my question.

[@mrgreenfull3897]

@@dw.in.michigan thank you both for kind answers! 🙂 I am planning to use mostly with EF Canon lenses so I am afraid of not achieving infinity focus because of removing piezzo antialiasing glass and factory UV/IR. For what I can see now, maybe the best option is full mod + Astronomik CCD CLS clip in filter?

[@Ro0oStEr94]

Can u make a vid on how to make a Hubble pallet/different colour ( like you’re last images) with just the l-enchanced or extreme and dslr. I cant figure it out 😅 love the vids and insta!

[@andrewwellum6472]

I second this, would be good to know if you can separate the bands captured.

[@kamilkp]

Yes you can

[@andrewwellum6472]

@@kamilkp Hopefully you'd be kind enough to dumb it down in a video for us mere mortals Kamil?

[@kamilkp]

Luke covered it very well: kzbin.info/www/bejne/ppCxZX1jobWHha8

[@andrewwellum6472]

@@kamilkp thanks for that Kamil, following so many now, information overload.

[@VitoPastore]

hi Kamil, what do you think using the L-enhance (i have a friend who will lend me that one) with a stock dslr? I have read that of course it is not the optimal config but still works to get rid of the nasty light pollution. Cheers from Chile.

[@kamilkp]

That is correct. You can do it but you won’t be very happy with the result. Feel free to try but manage your expectations

[@luisgaravito1050]

Hi, the l-extreme works with skywatchet evolux 62ed? I have t-ring adaptor 2" for canon t6

[@goatsuukerhill]

Thanks for your information. Does a stock eos 800d block both IR and Ha wavelengths? I assume that the stock dslr IR cut filter blocks the Ha wavelenght. If so, how can the L-eNhance filter increase the Ha recording on the dslr sensor if the sensor’s IR cut filter blocks IR & Ha? Seems like using the Ha filters will not increase the dslr sensor’s recording of Ha. So why is the Ha filter used to record Ha with a stock dslr? Thank you Warren

[@kamilkp]

Stock DSLR blocks about 75% of Ha. Not all of it. But I’d definitely advise to mod a dslr without thinking twice

[@romaindechamps457]

Hello Kamil, very nice video thank you very much. I was wondering about using this filter to counterbalance my bortle 7 skies but I do unguided astrophoto which means that I am limited regarding the exposure time. What would you say is the minimum exposure time that you would do with this filter under which its become not very efficient to use it? You were refering to 5mn exposure and over, I saw in your video that it was 120s so I guess that you must have an opinion on this :) Many thanks

[@kamilkp]

It depends on the focal ratio of your scope

[@romaindechamps457]

@@kamilkp this very true indeed I did not precise this information ^^ ! I use a F/D5 650mm Newton scope with modified Canon 100D :)

[@romaindechamps457]

Any though on this minimum exposure time? For example is 60s too little of exposure? 180s?

[@fazergazer]

I find that with l extreme I have to confine my F stop to F/4 or slower. Otherwise filter goes off band at the extreme light cone of F2 or 2.8…..

[@AstroCloudGenerator]

It certainly is a great filter however in my experience it has one big draw back. The off centre halos that surround bright stars. How did you find them?

[@kamilkp]

I didn’t really notice. They might show up only with fast scopes like a RASA or Hyperstar

[@AstroCloudGenerator]

@@kamilkp no they are a nightmare on my RC51. It’s only a problem on really bright stars like Alnitak when shooting the horse head nebula

[@kamilkp]

Ah ok. I haven’t tried the Horsehead with this filter yet

[@AstroCloudGenerator]

@@kamilkp so I believe the Antlia Golden Filter has now stolen the l-extreme‘s crown. Not only ist it 5nm but does not create halos

[@kamilkp]

@@AstroCloudGenerator that’s why I’m super curious to see how the L-Ultimate is gonna perform 😁

[@RobsDIY]

i have a full spectrum dslr, that i used a clip in uvir filter to stop star bloaing etc, can i just replace that with the l enhanced and wont have any issue?

[@kamilkp]

Probably

[@fretBeastForever]

Astronomik Hydrogen-Alpha 12nm CCD Filter VS The Optolong L-eXtreme Filter ?

[@kamilkp]

They are completely different filters

[@fretBeastForever]

@@kamilkp I`ve researched on google and I found the difference. Thnak ypu.

[@petertrahan9785]

I have a full frame DSLR. So neither of these filters are an option for me, right?

[@kamilkp]

Is you wanna use it with a camera lens then yes - won’t work. But if you wanna use it with a telescope then sure

[@marcinb493]

Czy ma znaczenie położenie takiego filtra względem matrycy? Mój egzemplarz nie leży idealnie równolegle do płaszczyzny matrycy - zastanawiam się czy przez to może się inaczej zachowywać.

[@kamilkp]

Powinien być równolegle wg mnie. Spróbuj popatrzeć okiem na jakieś źródło światła przez ten filtr (nie słońce 😅) i zobacz co sie dzieje jak zaczniesz zmieniać kąt położenia. Inne kolory zaczynają trafiać do oka i tak samo będzie z matrycą moim zdaniem

[@marcinb493]

@@kamilkp No właśnie przy delikatnych ruchach nie widzę jakiejś znaczącej różnicy. Filtr w aparacie z jednej strony jest ok 1mm niżej ale może pobawię się w podginanie blaszek, żeby było idealnie. Dzięki Kamil za odpowiedź. Pozdrawiam.

[@ninjageezer6802]

do i need a 2 inch version for 60D canon Astro modified ?

[@kamilkp]

Yes

[@3DAstroTC]

Hold it!!! You CAN use the L-eXtreme with camera lenses, I made an adapter for Canon dslrs and 1.25 filters. Here's a link to me using my f/2 Rokinon 135mm, DSLR and 1.25" L-eXtreme to bring out the Squid Nebula: kzbin.info/www/bejne/nJuak2qPnZmXhs0

[@kamilkp]

Nice! Didn’t know such adapters existed. Thanks for letting me know!

[@3DAstroTC]

@@kamilkp sure thing! And congrats on the 10K+ for IG!

[@mipadipad]

So will it work on a cheap canon 2000d and what are the results like ?

[@kamilkp]

I showed my results in the video

[@mipadipad]

Hi. are the images you show at 3.18 taken with the canon 2000d as I can't catch what you say and later you show other images are they also 2000d or are they using filter on a more expensive camera

[@kamilkp]

They are all shot using the 2000D

[@mipadipad]

@@kamilkp hi then I'm very impressed with the camera and your undoubted skill . Thanks john

[@kamilkp]

Thanks!! 😊

[@davidletz9123]

For those of you using this filter (L-eXtreme) with a DSLR/Mirrorless camera, do you have problems focusing through such a dense filter? Do you just find the brightest object in the sky and use that?

[@Kevin.kistermann]

But you need a modified camera for this, right?

[@kamilkp]

Yes. Otherwise most of the good stuff (Hydrogen-alpha) is gonna get blocked by the IR-cut filter in the camera

[@sladzioslav]

@@kamilkp Not necessarily I'd say. I'm imaging with the LeXtreme and a stock Sony A7RIII as we speak- you will still get results miles better than without a filter (with enough exposure time) but a modified camera will of course capture a lot more of our precious Ha light ;) A filter like this will improve your photos by a lot and if you decide to mod your camera later on, it will be even better then

[@kamilkp]

Yes, a stock IR filter blocks about 75% of Ha, but not all of it indeed. (I checked it once for my Canon EOS R)

[@kc_clicks6524]

I use rough polar alignment . Can I get better images under bortle 6 using l enhance. I can only get 40s exposure