The Big Apple - M27

[petershah]

The Big Apple - M27

M27, The Dumbbell also known as The Apple Core Nebula Imaged remotely from Spain with the 16in ODK and asi2600mm pro
Exposure times were 420x 180s in Ha and 160x 180s in OIII, 180x 60 in Red 140x 60s 120x Blue, just over 36hrs total, Processed in Pixinsight and Photoshop.

Full Res version can be found on my page https://www.astrobin.com/users/asteroidbelter/

Thanks for looking
Peter Shah

https://astrob.in/m1g53a/0/rawthumb/hd/get.jpg?insecure (https://astrob.in/m1g53a/0/)

[Andy01]

Spectacular image Peter! :eyepop:

Havn't seen that with so much depth before, very well done. :thumbsup:

[croweater]

Wow Peter! That's the best one I've seen mate. Detail is amazing.
Cheers, Richard

[strongmanmike]

Hmmm?..nup, that's just worth a simple :eyepop:

:thumbsup: gorgeous and striking, the level of detail is amazing, wow!

Seen a few of these deep Dumbells, what an object... and this is right up there with the best.

Mike

[JA]

What an amazing image. Well done Peter:thumbsup::thumbsup:

Best
JA

[markas]

Splendid:thumbsup::thumbsup: Love the colour rendering!
Mark

[John W]

Terrific image Peter - I really like the colours.

Cheers, John W.

[petershah]

Thanks for all of the comments, very appreciated ...The colour balance of M27 is always a bit of debate, should it be green or blue.... I prefer the blue for a couple of reasons. The first is this was the colour I got straight out of my MX5c back in the 90's when I first imaged it, the other is those subtle mixes of blue and reds give a brighter and more cleaner purples over the duller browns you get with the greens and reds.

[Addos]

another good one Pete! some pretty amazing detail near the core too. made me stare :)

[Dave882]

Amazing detail. Really splendid depth and colour!!

[gregbradley]

Geez, Peter you are pumping out some world class images. Best M27 I have seen.

These new small pixelled cameras are really opening the door to increased resolution.

I wonder if that trend continues as Sony is bound to release a 100mp full frame sensor in one of their cameras fairly soon.

[petershah]

Thank you Adam

Cheers Dave

Cheers Greg, The only thing with the new CMOS is they are all made with tiny pixels and most long FL scopes are so over sampled. For best results on CMOS its better to software bin after acquiring at 1x1 rather than 2x2 hardware binning. But even with binning its still over sampling at 0.5 arc/sec per pixel on this scope. The advances in processing techniques does allow quite a lot of recovery of resolution so its not all bad..... There are much more positives than negatives with these new generation cameras but I see a lot of people still using them like the old CCD's and so they are not using their cameras to the full potential.

[gregbradley]

I thought CMOS is all software binning as they don't have the hardware provision for hardware binning.
Are you noticing an improvement by imaging at 1x1 and then software binning to 2x2 versus setting capture software to 2x2 (which I believe is software binning).

Greg.

[Nikolas]

The detail is astounding Well done mate

[Peter Ward]

Correct, CCD's improve the SNR by a factor of 4 as binning is performed at the hardware level (in fact, with 3x3 binning it bounces up to 9...but typically 27 micron pixels...not pretty. ).


With CMOS it's a factor of two.


Depending on the FL used, where CMOS binning helps for me is the significant reduction in file size....really helpful with memory handling of dozens, if not hundreds of exposures.

[Paul Haese]

Excellent image Peter; the detail and colour are very nice.

[petershah]

definitely better software binning....you can hardware bin but the noise is higher. Plus it give the option of bin or not.
Attached is one I did as a test to see if there was a difference in signal 1x1 Vs software 2x2...software binning works really well.

Thank you

I did both software and hardware...there is a significant difference with software binning, but as you say the files sizes and shear volume of files and storage needed is massive....Im working on one atm that has over 1200 frames at nearly 100mg each...my PC is having trouble and am going to have figure out a way to do it

Cheers Paul