First Narrowband Light with the ASI294MM Pro

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umasscrew39
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First Narrowband Light with the ASI294MM Pro

Post by umasscrew39 » Sun Oct 11, 2020 4:54 pm

The ASI294MM Pro is the newest camera in the ZWO line. It has advantages over the well-established ASI1600MM Pro like no micro-lens effect from bright stars and a higher QE. However, it does produce amp glow like the 294MC so one needs to make sure you have good darks to remove it.

Here is M27 in narrowband using a C11" EdgeHD @f/10. Using this scope at f/10 really requires good or better seeing to avoid oversampling. Also, given I have had only a handful of hours this entire year to date to image anything, I was anxious to try this new camera. So, view this with an eye of just a beginning because I need to collect a ton more data- hopefully this year! Adding more data will certainly get more of the nebula to pop out and be much sharper.

Gain was 120; Offset was 50; Narrowband filters: Chroma H-alpha (5nm); OIII (3nm)
Integration: 13x300s (H-alpha) and 21x300s (OIII)
Dumbbell Nebula.jpg
Dumbbell Nebula.jpg (799.85 KiB) Viewed 444 times

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admin
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Re: First Narrowband Light with the ASI294MM Pro

Post by admin » Sun Oct 11, 2020 7:16 pm

Hi Bruce,

that's a great image – glad to hear that you're getting on well with your new camera.

Cheers, Robin

umasscrew39
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Re: First Narrowband Light with the ASI294MM Pro

Post by umasscrew39 » Mon Oct 12, 2020 11:40 am

Thanks much, Robin. It is performing well, so far, and does appear to be an upgrade over the ASI1600MM.

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Menno555
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Re: First Narrowband Light with the ASI294MM Pro

Post by Menno555 » Tue Oct 13, 2020 3:07 pm

Oh wow, nice one! I like the color setting!

umasscrew39
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Re: First Narrowband Light with the ASI294MM Pro

Post by umasscrew39 » Thu Oct 15, 2020 8:47 pm

I was able to collect more frames and could at least get some of the outer shell. Here are 2 versions:
M27_new.jpg
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M27_clone.jpg
M27_clone.jpg (176.58 KiB) Viewed 350 times

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Menno555
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Re: First Narrowband Light with the ASI294MM Pro

Post by Menno555 » Fri Oct 16, 2020 4:13 pm

Seems you like the camera? ;)
Indeed the outer shell is starting to show. Very nice :)

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turfpit
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Re: First Narrowband Light with the ASI294MM Pro

Post by turfpit » Fri Oct 16, 2020 7:38 pm

Outer shell coming along nicely Bruce.

Dave

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Re: First Narrowband Light with the ASI294MM Pro

Post by umasscrew39 » Fri Oct 16, 2020 10:55 pm

Camera is ok ;) ...... just lots of user error :)

Thank you both very much. I need the encouragement as I see what folks gather in dark skies with this and other DSOs and I get discouraged at times. Dave- I don't think I will ever obtain the patience you demonstrate with your stuff, especially the incredible lunar and planetary images you produce.

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Re: First Narrowband Light with the ASI294MM Pro

Post by turfpit » Tue Oct 20, 2020 12:52 pm

Bruce

I have been experimenting with M27 and APP's 'combine RGB > formulae'. These are the outcomes of the 11 combinations offered from the drop down 'formulae' menu. Some interesting outcomes from no effort.

The test data was: L: 18x300s, RGB each 6x300s, Ha & OIII 3x600s.

Dave

all-APP-formulae.JPG
all-APP-formulae.JPG (319.05 KiB) Viewed 278 times

timh
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Re: First Narrowband Light with the ASI294MM Pro

Post by timh » Tue Oct 20, 2020 8:49 pm

Hi Bruce,

The detail and contrast within your pictures of M27 is quite exquisite. The background stars seem quite few and faint relative to the nebula (compared to my own pics with a UHC filter) - is that something deliberate through post-processing or just the natural consequence of using the narrow band filters ? Anyway the effect is to really enhance the nebula.

best wishes
Tim

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