Search found 3 matches
- Thu Jan 12, 2017 6:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Edge-On NGC 891 (2017 Jan 12)
- Replies: 35
- Views: 9116
Re: APOD: Edge-On NGC 891 (2017 Jan 12)
Nevertheless, they look a lot more like synthesized spikes than real ones, given the total lack of dispersion. Actually even the reflections around the stars are completely identical on the 2 pictures. The other one is I think a 24 inch RC. I have a Celestron EdgeHD as well, I know how stars looks ...
- Thu Jan 12, 2017 5:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Edge-On NGC 891 (2017 Jan 12)
- Replies: 35
- Views: 9116
Re: APOD: Edge-On NGC 891 (2017 Jan 12)
I still think they are "real" diffrac. spikes. Check the aligned images, the other one is from a completely different source, I guess an RC. Spikes cannot be reproduced artificially so perfect.They're not diffraction spikes.
http://g.recordit.co/l8WMbobs6s.gif
- Thu Jan 12, 2017 7:59 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Edge-On NGC 891 (2017 Jan 12)
- Replies: 35
- Views: 9116
Re: APOD: Edge-On NGC 891 (2017 Jan 12)
Incredible details, nice pict. How it is possible to have diffraction spikes with a SCT? (It was taken with a C11@f10, f6,3 according to the spec of the creator)