Starship Asterisk*

In reply to ANN's comment: Kinch, that's an interesting portrait of cluster NGC 2259, but it's an even more interesting portrait of that nebula. I thought at first that it was a reflection nebula because it's blue, but it is an emission nebula taken through Ha/OIII/SII filters. Does the blue color mean Ha here? Because if it means OIII, then whatever ionizes that nebula must be very powerful. Well, interesting, in any case!

There is both Ha & OIII emission. My web page is now updated to show the amount of each....about half way down the page: http://www.kinchastro.com/ngc-2259.html

Mars & M22
http://www.vadakcsillaga.hu/naprend/202 ... 00229.html
Copyright: Tamas Abraham Conjunction of Mars and Messier 22 globular cluster captured on February 29, 2020 in Zsámbék, Hungary.
Equipment: 8-inch newtonian reflector (F/5), Baader MPCC, Canon EOS 400D.
Details: 11x30 sec., ISO 800.

Thanks for watching,
Tamas

M78 - Boogie Man Nebula [DSLR]
Copyright: Paolo Demaria

Picture taken from Castelmagno (Cn, Italy), with a 80/480 Apo Triplet (reduced @f/4.8), modded Canon EOS 6D, Skywatcher Eq6Pro; 38x300 s @1600 ISO.
Full resolution: https://www.astrobin.com/c7zash/B/?nc=user
Best regards,

Paolo Demaria
Ass. Astrofili Bisalta, Cuneo (Italy)

Horsehead and M42
http://www.woodlandsobservatory.com
Copyright: Alistair Symon This is a 4 image mosaic taken with a 4 inch refractor and 35mm CCD camera. 15 hours of H-alpha data was combined with 22 hours of RGB data for a total imaging time of 37 hours. You can see a higher resolution image here:
http://www.woodlandsobservatory.com/Hor ... 422020.htm