Baader UV/IR Cut vs Semi Apo filter - Lunar Test with Achromat Refractor

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Please watch in 4K for best results :) Comparison between no filter, UV/IR Cut filter and Semi-Apo filter - Lunar imaging test with a Sky-Watcher Evostar 120mm Achromat refractor.
*Settings where kept the same accept when stacking two filters where I needed to increase the brightness by extending the exposure time.
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Опубликовано:

16 апр 2022

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Комментарии : 56

@Ajajambo 4 месяца назад

The semi app is simply amazing at keeping the colour neutral and cleaning up CA. It’s a must for any achromat owner

@AstroLaVista 2 года назад

I think the answer is use anything other than no filter, what do you think?

@lukomatico 2 года назад

Superb test mate!! - Awesome that you took the time to put this together, - a lot of faffing around changing and combining filters I'd bet for sure! For my money, either the Semi-Apo filtered or Semi-Apo+UV-IR cut looked best, really hard to split them!

@AstroLaVista 2 года назад

Cheers mate! I think the Semi-Apo filter's going to live on my refractor, I need to try DSO imaging with it :D I also have a Wratten number 8 filter to test which is a more affordable alternative to the semi apo.

@martinmuldoon603 Год назад

I'm just googling around looking for uv/if filters for normal photography, I loved this video for it's therapeutic benefits, it's got a great flow with perfect flowing music, it will be my new sleep aid.

@smalloptics753 2 года назад

Hey Chris, hope you're well pal. The semi apo on its own won it for me, everything just seemed to pop more with that one. Great test buddy 👍😃

@AstroInDusVerse 2 года назад

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@AstroLaVista 2 года назад

Hey Jason, good thanks! Busy busy :D I'm pleasantly surprised by the Semi Apo so far. It needs more testing but I no longer have that 'it's sounds too good to be true' feeling about it. It's turns out that the Semi Apo filter has the UV IR Cut built in so there wasn't much point in me stacking the two filters together it turns out hehe

@ziggyfrnds 2 года назад

Thanks Chris. I just realized why my moon photos weren't sharp when I was using my achromat.... compared to now that I'm using a reflector and a uv/ir cut filter. Btw I've flocked my Newtonian and made an impromptu shade for the primary mirror as I'd noticed a lot of light leak from the back of the scope. Hoping for clear skies soon here in Sydney

@AstroLaVista 2 года назад

Hey ziggy, Nice work! That should all help with contrast and I hope you get to find out sooner than later :) It's been cloudy here a lot too over the last couple of weeks! I don't think you're alone with the achro experience so it's a good to shine a bit of light on the UV/IR cut (which the Semi Apo also has built in I've just found out!). Some folks might be able to give their achro's a new lease of life.

@jchawthorn Год назад

A very useful video, thank you.

@AstroLaVista Год назад

Glad you liked it John, Cheers!

@RyanGsBBQStuff 2 года назад

I didn't know that you can stack fillters I'll have to give it a go very interesting video.

@AstroLaVista 2 года назад

Cheers Ryan, yeah I was able to thread the Semi Apo onto the UV IR Cut although in hindsight I didn't need to do so because it turns out that the Semi Apo filter contains UV/IR Cut! Live and learn lol

@GarnettLeary 2 года назад

Interesting test. It’s quite a confusing mess for beginners these filters. OSC folks are blocking infrared and mono guys are using IR-pass. Same with UV etc. It’s very easy to get lost in all of it. I’ve tested a number of filters I hated in the past but rediscovered years later. The only good advice I can offer is for someone to do as you have and test them. An entire opinion can be swayed simply by location or aperture. Quite hard for anyone to be definitive on any of it.

@AstroLaVista 2 года назад

Exactly this! Filters are highly dependant on the situation which is why I don't wont make sweeping statements on video titles like 'Use this filter to improve your images!' Yes they would get me more views because YT likes titles like that but a title of "Semi Apo Lunar test with Achromat refractor" is more exact and less misleading I feel :) Talking of IR pass I use the Pro planet IR pass with with my ASI462MC colour cam. I think the bayer is more invisible at IR wavelengths so IR sensitive cams act like mono's at these wavelengths...at least this is what I've read.

@AstroSoundscape 2 года назад

Hey Chris I didn't even know there was such a thing as a semi apo filter. On my phone I liked the UV/IR filter the most but I think that's more the color so close up for detail maybe the Semi Apo would win. Nice test Chris 👍👍

@AstroLaVista 2 года назад

Thanks Ollie! I like both the UV/IR Cut and Semi Apo, both much better than the slightly pink soft no filter image. I've just found out that the Semi Apo has the UV/IR Cut built in which explains a lot!

@avt_astro206 2 года назад

Great Comparison chris. With my ASI 224mc im currently shooting Unfiltered. Maybe I should Get an Ir/UV cut filter! Nice Moon views!

@AstroInDusVerse 2 года назад

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@AstroLaVista 2 года назад

Hi Avanteesh! Many thanks mate :) I honestly would get one for that camera - the following is from the product description for the ASI 224mc "To maximise the sensors IR performance the protective anti-reflection cover-glass does not include UV/IR cut but a seperate UV/IR cut filter can be obtained and fitted for colour imaging" I think it would be a good way to step up sharpness and contrast judging by the above little test, but more testing needed of course :)

@avt_astro206 2 года назад

@@AstroInDusVerse aww, Thank you! 😊

@avt_astro206 2 года назад

@@AstroLaVista Ahh, Cool. I would Like To get an IR pass Filter. I have Heard It works Fantastic under Bad seeing To get Fine Details On moon and Planets!

@Youtuber-ku4nk 27 дней назад

First thing to do, if you have not done it before, is to center the secondary in the spide and center it right under the focuser in all four directions.

@opponoastos 2 года назад

For my Orion 120ST refractor, I'd like to see now if a UV/IR Cut filter and/or Semi-Apo filter would help with CA.

@vzr314 Год назад

IR/UV cut only is a clear winner

@ziggyfrnds 2 года назад

Hey Chris! I have another baader filter the moon and skyglow plus uv ir cut, have you tried that one? It's pretty good but the camera I'm using it with (a qhy 163mc pro) already had uv/ir cut built in, It looks from your tests that stacking uv/ir filters has no adverse effect. What do you think?

@AstroLaVista 2 года назад

Hey, I remember owning the Moon and Skyglow filter but it was a long time ago. I didn't do any direct comparisons at the time so maybe one for me to re visit. The only down side to stacking the two filters was the darker image which meant using longer exposure times and this reduced the frames per second.

@138antares 2 года назад

Very good.

@mediocrefunkybeat 2 года назад

This might make things much more accessible for those of us that want to start imaging but can't quite step up to an Apo...

@AstroLaVista 2 года назад

I hope so Duncan, so far the Semi Apo seems like a good upgrade and I'm looking forward to testing it on some more objects :)

@arielmario2952 Год назад

Q GRAN VIDEO!! q bien explicas en hora buena y a por mas. quiero hacerle una pregunta. resulta q tengo una canon 100d y la voy a modificar, osea quitare el filtro ir y el low pass. ahora mi duda viene aqui, en sustitucion a esos filtros estoy en duda cual es la mejor opcion de filtro, por q he leido mucho y en algunos casos me dicen q ciertos filtro sacan estrellas como pelotas o con halo, esa es mi primer duda , q filtor me aconsejas, segunda duda, puedo ponerle mejor un cristal en sustitucion a estos filtros q quitare, y el filtro q me recomiendes , ponerlo por fuera , como los q muestras en este video? o es mejor ponerlo directamente donde estaan los otros filtros, y ultima duda, e escuchado q al hacer la modificacion al quitar estos filtros, se pierde la auto limpieza, es verdad??? por cierto yo uso la camara solo para astrofotografia , no me interesa usarla diurnamente mil gracias!!!!!!!

@thefourgrapples2810 2 года назад

I preferred the result with the Semi-Apo. I don't have one, so I'll have to put it on my list. Amazing results really considering the way the sky looked.

@AstroLaVista 2 года назад

Hey Kevin, I was so surprised by the semi apo filter I thought there must have been some mistake in the testing so re did the imaging tonight! Same result, the Semi Apo rocks for imaging : ) I've just read that it has UV/IR cut built in which partly explains things, and also makes my UV/IR + Semi Apo filter test a bit superfluous lol

@AstroLaVista 2 года назад

p.s. Liking the FourGrapples avatar, I don't think we have grape flavoured apples over here.

@thefourgrapples2810 2 года назад

@@AstroLaVista I have the Baader Fringe Killer that I used with my Achromat. It's a 90mm f/5.5 so it really needs a filter of some kind. It does help considerably, but I'd like to make a comparison with the Semi-Apo.

@thefourgrapples2810 2 года назад

@@AstroLaVista I've actually never had one, (Grapple that is), I think it's a west coast thing.

@AstroLaVista 2 года назад

@@thefourgrapples2810 I've heard the Fringe killer does a better job of reducing the CA but it gives a stronger colour cast. I may end up getting the Fringe killer also in which case you can guess what I'll be testing side by side :D

@AstroInDusVerse 2 года назад

What a coincidence, today i search on RU-vid about this topic.

@AstroLaVista 2 года назад

That's some good timing if I do say so myself, cheers :)

@ohwell2790 Год назад

This filter description says it has UV/IR coatings also.

@AstroLaVista Год назад

Yeah the stacking UV/IR Cut with the Semi Apo was arguably pointless so best to pretend that part of the comparison didn't happen :D

@actudoran 2 года назад

To everyone considering a semiapo, this filter let's in some blues which are basically great for shooting nebulae sans very bright stars in the FOV. Won't work a treat for something like the peliades ... Some fringing will be present. The Contrast booster is basically a 485 highpass which won't let any blues below 485. This also helps focusing, reducing the apparent size of stars in long exposures. However unless you are considering shooting mono, save up for a triplet APO or a Newtonian scope :) Clear skies

@AstroLaVista 2 года назад

Or they could use a filter with their achro whilst saving for the expensive Apo! Option C :D

@veeretsy7528 Год назад

How do you reduce chromatic abbheration?

@AstroLaVista Год назад

Filters such as the Baader Semi Apo, Baader Fringe Killer, Baader contrast booster, or a simple Wratten 8 light yellow filter.

@Vic-pz5oh 2 года назад

I'm more a visual astronomer so ca doesn't really bother me. Another cheaper option is wratten #8 light yellow. Uv/ir looks well in your video Chris.

@AstroLaVista 2 года назад

Cheers Vic, I feel another test coming on with the wratten #8!

@Youtuber-ku4nk 27 дней назад

Instead of hanging a piece of paper you could have just hold up a hand to the eyepiece and see if the laser was in fact reflected back via the secondary.

@138antares 2 года назад

Filter uv/ir cut svbony is good?

@AstroLaVista 2 года назад

Sorry, I've not tested that filter.