I Compared A Hydrogen Filter Against A Dual Narrowband Filter

In this video I'm going to compare a ZWO 7nm Hydrogen Alpha filter against the 7nm Dual Narrowband Optolong L-eXtreme filter.

However in this video I'm going to just compare the Hydrogen-Alpha channels during a Full Moon. The reason why I chose Full Moon is because people often use Hydrogen-Alpha filters during Moon phases in order to cut through the Moon glow.

Bare in mind this is a dedicated Hydrogen-Alpha filter vs a Dual-narrowband filter and NOT a ZWO vs Optolong filter for example.

I'm going to be comparing the Moon glow resistance, contrast as well as signal-to-noise ratio. It's often cited to not use a Hydrogen-Alpha filter with a colour camera.

==== Consider Supporting This Channel On Patreon ====

==== My Equipment ====

==== My Filming Equipment ====

Disclaimer: Affiliate links are in use. If you buy through these links then (at no extra cost to you) I get a few pennies :)

==== Contact ====

Sparks by Chaël:

[hapestr]

Great posting once again, thanks! And Very useful - I never even thought of using a single Ha filter on OSCs. The result is actually quite impressive.

Beside that, we need to get that Pelican name sorted. Obviously, it is a Pterodactylus.

[sanderreizevoort]

God tier thumbnail! Excellent video as always

[Andyro]

I ordered an 2" H apha and received a dula band 7nm Ha and OIII

[morrisminor-shantiesfolkso]

Hi, thanks for this, very useful. I have a 533, not had much chance to use it yet, except for a bit of planetary. I am interested in why you used Bias frames? I was under the impression these were not needed with a dedicated astro camera. (in case you didn't guess I'm new to these, more used to DSLR).

[anata]

Are these filters produced by the same company? Is it 5 or 3 nm Ha?

[tempusfugit]

Can you give a distance in degrees from the moon the pelican was? That would be useful. You can measure precisely with Stellarium.

[dumpydalekobservatory]

Nice comparison between the 2 filters Ruz I thought the Ha would be better but the dual band didn't do a bad job.

[TheNarrowbandChannel]

Will you be doing any Siril tutorials? Some narrowband would be interesting. That software look good but is frustrating to me as I was never able to figure it out. And I spent many hours on it. As in over 30 hrs trying to master it.

If you had a Mono version of the 533 the detail in the Ha dedicated filter would probably be 4x better as you have 4x as many pixels to work with. Mono camera uses ever pixel while a OSC would only use 1 in 4 pixels for Ha or Red.

[phil]

nice comparison, I have a dedicated astro colour camera, and wondered if the results would likely be the same I shoot in bottle 6 skies and use a Triband filter by Altair, through a 61 williams optics. I am seriously considering the L extreme for when there is a full moon and also when shooting low on the horizon as that is where most of my light pollution is, which filter would you go for if you were in my situation?

[KopLamp]

You mentioned the “Eye of the Pelican”. I think I see the Pelican different than you. Your “eye” I call the Deadpool nebula 😅

[TheFlyingScotsmanTV]

hi. glad to see u imaging again. if yer going to kelling heath hopefully meet u. not quite sure where u think pelican is ? your image has it on it's side, and where u are seeing an eye isn't an eye. can't post links, but google it for an outline. yer not alone - luke couldn't see it either. it's all about the beak! 🙂

[Mel-]

Like the comparison but struggled to see the pelican. Flyingscotsman explained in his comments why I couldn't see it. I would of taken the dog with me to chill in the car, because he's got a fur coat on permanent poor chap. 🤔😊😎 Thanks for sharing your findings.

[bryandootson]

Thanks for posting this Ruz!

I am not surprised with the outcome

I’ve been imaging for about 15 years now and the advice to not use narrowband filters with a colour camera must be new thinking as we all used to use clip in narrowband filters in our modified dslr colour CMOS cameras before there were any dual, tripple or quad band filters available

I’d like to see a similar test done with a mono camera, just out of curiosity?

Thanks again for taking the time to create this content, it must be very time consuming!

Kind Regards and Clear Skies

Bryan

[athanasiosvlahos]

Hi. My name is Sakis and I live in Greece. I am new to the hobby and I need someone to show me how to start and how to use my equipment. I will be in London between 29 of September till 7 of October. Because of my English are not excellent, is it possible to have a conversation with my son who live there and explain me your advices