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Byron Davies

Sh2-86 (NGC-6820)

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IC 443 Ha and HaRGB

Started by jthommes, 02/20/2011 06:49PM
Posted 02/20/2011 06:49PM Opening Post
I have a late season shot of the Jellyfish. Image and details are here:

http://www.jthommes.com/Astro/IC443.htm

Both Ha and HaRGB are on this page. You can click on the images for full size.

Eta Gem is in the image and you will notice the "V" artifact in it. I get this with all bright stars with my Mak-Newt. I think it is due to the focus tube which has a slight intrusion into the light cone when the camera system is in focus.

Scope: ES 150 mm Mak-Newt at f/4.8
Camera: ST8300M Baader RGB and Ha filters
Mount: G11/Gemini

Jim Thommes

Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR

http://jthommes.com/Astro/
Posted 02/22/2011 05:10AM #1
Nice job. I can't tell from looking where the 1x1 turns into the 2x2 exposures.

Fort Lewis Observatory: (37.238, -108.052) ~2360m (7744 ft.) elevation.
Darkness - typically 6.5+
Scope - Meade 16" LX200; f6.3 focal reducer
Focus - JMI Smart focus
Camera - SBIG ST-10XE; (~.5"/pixel)
Guiding - AO-8 and/or Meade 5"/DSI/PHD
http://www.fortlewis.edu/observatory