M92

[silentrunning]

Well I managed to do some imaging over the last two nights it's been a couple of months since I've seen a clear night!! I've been setting up my dual rig after purchasing a baby 6" version of my GSO 12" RC so I now have that attached piggy back style to the big one. The goal is to try and acquire faint detail with the L data  from the big scope and some RGB data from the QHY8L OSC color attached to the 6". I figured this would be OK as the eye apparently mainly perceives intensity rather than colour so less photons in the colour data probably wouldn't be to big an issue. The previous owner of the 6" scope had had problems collimating it but I identified the problem as the kendrick secondary heater that spilt out into the main optical train and created some 'orrible diffraction issues. I started trimming it back but in the end removed it completely and it solved the problem. Th 6" is now 'perfectly' collimated and producing images that it is renown for. 

 

Not much visible in my tiny slice of sky except a few globs and I have imaged M13 so many times I thought I would have another bash at M92. I say another bash as I have tried it before and it's a tricky one to capture as the core is so bright, not sure if there are some foreground stars in front of it but it always burns out. 10 Mins saturated it, so I went for a load of 5 min subs. In the end I bolted the whole lot together so this is 3 hours worth in total of L data - 1 hour of 10 min subs and 2 hour of 5 min subs through the QHY11 on the 12" RC. 

 

 

This next image is a combination of the above and 1 hours worth of RGB data from the OSC QHY8L attached to the 6" RC. The color data was before I managed to identify the diffraction issue associated with the heater but even so the two seem to match up quite well and prove the concept works Okish.

 

Edited May 27, 2017 by silentrunning

[Guest]

I rather like M92 but I'm not sure I could catch it in my DSLR. One really clear night, it was so bright I thought I'd discovered a new comet. Thanks to Mr. Messier, I didn't claim it.

[silentrunning]

Ha ha! I think we've all be there at some point! 

[philjay]

Super image that John. The colours are excellent.

[Stephen]

Very nice image John

[Tweedledee]

Superbly detailed images. 

[silentrunning]

Many thanks chaps. I feel like I've finally done M92 some justice! 

[red dwalf]

worthy winner

[wolfman_55]

That's got to be one of the best globular cluster images I've seen. A real inspiration.

 

Dave

[silentrunning]

Thanks Guys. Didn't realise I got POTM! Awesome. Cheers.

On 2017-6-3 at 08:17, wolfman_55 said:

That's got to be one of the best globular cluster images I've seen. A real inspiration.

 

Dave

 

Thanks Dave, if you like that you might like what I consider to be my best astro pic to date, Globs are my favourite objects...

 

 

[red dwalf]

that is very nice, what equipment did you use to take and process it ? and is it a combination of different exposure lengths ?

[wolfman_55]

16 hours ago, silentrunning said:

Thanks Guys. Didn't realise I got POTM! Awesome. Cheers.

 

Thanks Dave, if you like that you might like what I consider to be my best astro pic to date, Globs are my favourite objects...

 

 

That's a beautiful image. I've often wondered if its worth spending lots of time on imaging the brighter globs. You can get good images in a relatively short time.

 

That really is time well spent. Must re-visit M13 & M92 methinks....longer exposures, more subs.......

 

Dave