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This has been on my hard drive for some months, so nice to have finally got round to processing it! Shot over several nights in January in my back garden.
NGC 281, also known casually as the Pacman Nebula, is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. It lies about 9,500 light years from us and is 48 light years across.
As the final version, I've gone for a crop, which I think holds up well, though I'll include the wider fov version in the next post.
I used a more natural colour blend for this image:
R = 76%*Ha + 24%*SII
G = 100%*OIII
B = 85%*OIII + 15%*Ha
For some reason, I was not expecting much from this image, but the result looks like it will be one of my favourites...the narrowband data was really good!
Captured using APT, stacked using APP and processed in Pixinsight.
5.4 hours integration time.
Link to full details and higher res version.
Thanks for looking!
Hello Astro Peeps, I hope everyone is all good! Isn't there some amazing images on this site and others. Amateur imaging has never been so good!
I myself have finally managed to get some data for an image, of which I am very happy. It has been so hot here it has been impossible to get any good data. One day a couple of months ago, I hung the thermometer from the grape vine under the back verandah and it was 47.5°C. Sounds far fetched, although true. I live in Adelaide, South Australia and we are 11km from the CBD and usually 1.5 degrees hotter than there!
Anyway, I thought I'd try my hand at a Ha, OIII bi-colour image while waiting for my SII data to come in. There seems to be a halo issue with some of the filters for which I will need to do further testing so I apologise for their distracting nature. Details are with the image but basically 3hrsx15min subs for each channel.
You can scroll to the bottom to choose another size or auto to fit your screen.
Happy photon collecting! ?
Details for those that cannot see them.
Telescope: William Optics FLT132
Guide Scope: QHY OAG
Camera: QHY9 Mono @ -20c
Filter Wheel: QHY 7 position Ultra Slim
Filters: Baader 36mm unmounted L R G B HA OIII SII
Guide Camera: QHY5L-II
Mount Control: EQASCOM
Focusing: SharpSky Pro and Sequence Generator Pro 3 (automated)
Bahtinov Mask: No (initial focus)
Capture Software: Sequence Generator Pro 3
Guiding Software: PHD2
Calibration and Stacking Software: PixInsight
Processing Software: PixInsight
Number and Type of Data Frames: L= X min, R= x min, G= x min, B= x min
Ha= 12x15min, SII= x , OIII= 12x15min.
Total Image Time: 6 hrs
Location: Lockleys Observatory B, Tanunda, Sth Australia
Light Box by Exfso