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Old 09-10-2018, 11:37 AM
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Helix Nebula NGC7293

It's Helix season! Can't wait to see what sort of PN our Sun will produce in 5 billion years lol.

Capture details: This is a Ha / OIII+Green / OIII+Blue combination. My Ha filter is fairly wide at 30nm. I'll get a more narrow band filter in the future. Some OIII was taken with a visual OIII filter + UV/IR cut filter double stacked.

Ha = 330x2 minutes.
Green = 278x1 minute.
Blue = 148 x 1 minute.
Total about 18 hours.

ZWO ASI 183mm Pro at -10C, GSO 10" F4 Newtonian, HEQ5 Pro guided with PHD2 over several nights.

Bigger at Astrobin ---> https://astrob.in/370752/0/
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Old 09-10-2018, 02:44 PM
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I think you've go the hang of this new camera Kevin...and nice to see you guiding too
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Old 09-10-2018, 02:59 PM
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There's so many filter to try Lewis. It makes it interesting. I had to have a long think how I would combine it all. This one really made a mess of my hard drive lol. There's files and tests everywhere.
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Old 09-10-2018, 03:12 PM
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Kev, I recently connected my 2 laptops via a LAN cable and transferred 371 GB of imaging data from one to the other. It took 8 hrs to transfer I think it may even be time to delete most of it completely.

I stuck to 7nm/6.5nm for my NB filters.
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Old 09-10-2018, 07:54 PM
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I'm sometimes deleting the subs now and just keeping the stack. The subs take up so much space. I need another drive for backup too.
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Old 10-10-2018, 02:04 PM
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Good depth and nice colours. You've got a little tilt in your field though.
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Old 10-10-2018, 04:00 PM
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Good depth and nice colours. You've got a little tilt in your field though.
Yeah there's something going on there. There's quite a few stacks added together where the camera has been removed and put back on. I suspect DSS is a little off in registration, or some of the filters have a slight distortion. My Ha filter after all did only cost 10 dollars.
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Old 11-10-2018, 10:51 AM
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Yeah there's something going on there. There's quite a few stacks added together where the camera has been removed and put back on. I suspect DSS is a little off in registration, or some of the filters have a slight distortion. My Ha filter after all did only cost 10 dollars.
Ha that makes sense. Yeah harder to register subs from different sessions.
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Old 11-10-2018, 05:59 PM
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Really like this a lot - congratulations
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  #10  
Old 11-10-2018, 10:35 PM
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Really like this a lot - congratulations
Thanks Marc. Glad you like it.
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Old 12-10-2018, 07:56 AM
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Lovely colour on this one Kevin

Mike
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Old 12-10-2018, 09:39 AM
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Thanks Mike. Yeah I like the colours too.
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Old 12-10-2018, 10:23 PM
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Nice helix but your stars on the edges on your image are a bit out but still looks good Kevin
Martin
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Old 13-10-2018, 05:13 PM
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Thanks Martin. Yes there's multiple reasons for the odd star shapes. At 2 minute subs I'm getting some diff flex. I need an OAG.
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Old 15-10-2018, 06:56 PM
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A nice result, Kevin. Good luck with the final tweaking... and how about NB for this target next time
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Old 15-10-2018, 11:38 PM
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A nice result, Kevin. Good luck with the final tweaking... and how about NB for this target next time
Thanks Rick. NB would be nice. Hopefully next year.
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Old 20-10-2018, 03:30 PM
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Yikes, I am impressed, great photo.
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Old 20-10-2018, 07:19 PM
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That is a very nice one Kevin, great colour and detail, if it where mine, I would be more than happy to add it to my stables.

Cheers
Peter
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Old 21-10-2018, 08:09 AM
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Quote:
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Yikes, I am impressed, great photo.
Quote:
Originally Posted by PeterSEllis View Post
That is a very nice one Kevin, great colour and detail, if it where mine, I would be more than happy to add it to my stables.

Cheers
Peter
Thanks Helen and Peter!
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