Testing the SVBONY SV240 Filter: How Well Does It Capture Deep Sky?

[@michaelnixon6672]

I also purchased this filter and have been using for the last week or so, I noticed the halo effect, was not sure it was the filter but you have clarified it for me. The range of the filter maybe works to save a dollar or two on filters across the spectrum. Good video!

[@Naztronomy]

Svbony has been stepping up their production game. I've been using their UV/IR cut filter for a while, good price and good product.

[@DeepSpaceAstro]

That's good to hear! This is the first product I've used from them.

[@Naztronomy]

@@DeepSpaceAstro Ah cool, I have other random filters from them and I've been using their 60mm Guide scope for years. They are certainly affordable!

[@Techbypaco]

Thanks for the quick review video. Saw this filter suggested recently, but also heard about the odd halos. I have had the SV220 filter on my wishlist for a while and wonder how is compares and if it has halo effects.

[@DeepSpaceAstro]

I saw some chatter about the SV220 on CN, and it seems to be the favorite amongst those who own it. I believe that's a dual-narrowband filet, so I would expect it perform better in the Ha and Oiii areas.

[@grht2]

Sv220 was awesome, trying the Sv240 tonight. Clear skies

[@eugene8241]

я тоже заказал 220, и рассматривал к покупке 240, но после видео как-то расхотелось. уж лучше нарвеное купить optolong L pro

[@mark2220]

Absolutely love the 220

[@grht2]

Sv240 tried out for some hours, I feel it´s letting to much light through. Signal is drowning in noise

[@michaeledmonds3027]

Great as usual, Rich.... I've got the SV220 and it does a decent job on nebulae, but I'm still looking for that best single filter for Bortle 8, using 60mm and 80mm refractors with my ASI533MC Pro camera. Maybe the Altair TRI RGB or QUAD? Something else? Thanks for your thoughts, Michael

[@DeepSpaceAstro]

Thanks! Sorry I've never used either of those, so I can't comment on how they would perform.

[@0NetKidz0]

This filter is similar to IDAS GNB. Cuiv had tested GNB with NIR sensitive IMX585 in Tokyo B9 zone to photo M33. I think the result is great. I got my IDAS DTD (also has NIR pass) but due to cloudy for months, I haven't been able to test it.😢

[@OVRCOME]

Great video!

[@DeepSpaceAstro]

Glad you liked it!

[@chrishanson3497]

Hi Rich, I purchased the SVBONY Telescope Filter 2 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography. I bought this over a year ago for my Bortle 8 sky and it works pretty good.

[@DeepSpaceAstro]

Thanks for sharing your experience.

[@robvandenwijngaart1970]

Hi Rich, It looks like that in the second photo you see also a reflection of the sensor in the halo. The is at least something that looks square to me.

[@DeepSpaceAstro]

I thought that too, but my sensor is rectangular and it looks square?

[@AmatureAstronomer]

Very good comparison.

[@DeepSpaceAstro]

Thanks! Hope it was helpful.

[@scottrk4930]

Hiya Rich . Does this filter have threads on both sides ? I don’t have a wheel or drawer so I’m wondering if I can just insert this between existing hardware. Thanks !

[@DeepSpaceAstro]

It doesn't.

[@scottrk4930]

@@DeepSpaceAstro Thanks for the clarification !

[@constantinf.5764]

What percentage do you think of total deep sky light is within the Oxygen III and Hydrogen-alpha/beta bands? Just wondering how much of the deep sky information is lost by letting in only those three bands. Also, how much of an improvement is this over the dual band without the hydrogen-beta? Do you get a lot more information with hydrogen-beta?

[@DeepSpaceAstro]

Couldn't say what the percentage is. The filter is effectively a light pollution filter allowing the specified wavelengths through. Hb is very close to Ha in the spectrum, with mono you would probably see the difference, with OSC I wouldn't expect it to be as much.

[@FredLombardo]

Great video. I use an Antlia Triband RGB Ultra filter. Another filter with a galaxy band pass. I pretty much use it exclusively for all my imaging except planetary of course. Was a bit disappointed with the Iris results in the video but I would suspect that is more due to the properties of the nebula itself.

[@indysbike3014]

This filter shouldn't be used on the Iris nebula because it's a reflection nebula.

[@DeepSpaceAstro]

Probably not a real good fit for reflection I suppose.

[@FredLombardo]

@@DeepSpaceAstro this is how we learn. Thank you 😊

[@richardnixon8795]

Can you explain why a filter would be "good up to Bortle 8"? What happens in Bortle 9? Cheers and great video!

[@DeepSpaceAstro]

I assume because Bortle 9 is described as almost a completely lit up shy. Under those conditions I would think only lunar, planetary, and maybe some bright stars would be visible naked eye, so the filter may not perform as you would hope.

[@richardnixon8795]

@@DeepSpaceAstro Thanks! I'm just outside Phoenix and our skies are bright, but I've just started using an L-enhance with me astro modified Nikon D5100 and man, what a difference! I wanted to get another L-enhance but wondered if the SvBony would be a good secondary alternative. I'll keep thinking about it. :) Clear skies!

[@mireia3208]

Honestly, these results are far from shocking. I have their sv220 and that one is quite impressive.

[@V1V2-b1t]

Is this Filter only perfect for Mirror Scopes, or also for ED APO?

[@DeepSpaceAstro]

I've used it in my WO RedCat51 as well.

[@jefwizz8932]

Thanks ! 👍

[@DeepSpaceAstro]

Welcome!

[@mikehardy8247]

I'm in bortle 9, so not for me. I want that magic filter that helps with broadband, like clusters and galaxies. Keep wanting to try the IDAS GNB.

[@robinell]

You have pinched optics. Unscrew the Primary mirror lock screws a little bit. Thanks for the video

[@DeepSpaceAstro]

Locks aren't engaged, but yeah I've been meaning to look into this. Seems it doesn't always show up.

[@jpastroguy]

Frankly, I saw similar results with the Antlia Quadband, which allows a very similar NIR pass (kzbin.info/www/bejne/baWuiqemfblrnsU). In that study, I think UV.IR cut gave more depth and detail than the QUAD on the target; Andromeda. I also believe, that for some bright DSO targets, such as M42, these kind of filters (IR pass filters) may be useful (kzbin.info/www/bejne/a6rJp42Bn76Njs0). However, in general, I am convinced that UV.IR cut is better for galaxies and dual narrowband is generally better for nebulae in OSC imaging. Thanks for sharing the data and a useful video!

[@rickdurham264]

Have you tried the SV231 colour correction filter? I have just bought it and am hoping it will make a bit of a difference too...

[@jpastroguy]

@ Sorry , I have no experience with it. PAUL

[@marcelpost4052]

There's a bit of a problem with your camera in the beginning of the video; it keeps zooming in and out. This is very distracting.

[@MG-qj2zh]

ist das nicht viel mehr auch abhängig vom verwendeten Teleskop, Der Cuiv hat erst unlängst ein Interessantes Video dazu gemacht. kzbin.info/www/bejne/jGXWn5-QjsmohMk

[@blufferblue1599]

Yeah, well, I don't really see a point in this filter. They should have done O3-SH filter instead, to go with sv220, similar to the askar lineup. Thanks for the review, tho!

[@SpyeBlack]

Not for nuthin, but that filter isn't doing much of anything. Anything good, anyway. If anything, it's creating more complications by the non-linearity of the sky. Sure, it brought out more nebulosity in the Witch's Broom, but at the expense of some problematic blotching in the bright halo in addition to the non-linearity of the sky. I'd rather run GraXpert AI or RBF gradient reduction on the non-filtered data any day. Now I like SVBONY, and I have a fair amount of that stuff, but this is crap.