Deep sky
NGC 2392 Eskimo Nebula in constellation Gemini
by Vern on Feb.06, 2008, under Astronomy, Deep sky, Planetary Nebula
Image below is of NGC 2392, the Eskimo Nebula in constellation Gemini. The one from the Hubble is admittedly just a tad bit better.
Image from last night, Feb 5 after 11 pm, 12 deg. F, no wind, transparency was good, and turbulence was better than usual, about 6/10. All images from Nexstar11, F3.3 focal reducer, and Stellacam II video camera, (4 second integration, 9/14 gain). 30 frames aligned, dark subtracted, flat field corrected, aligned, stacked, and enhanced with Registax4.
NGC 2371 and NGC 2372
by Vern on Feb.06, 2008, under Astronomy, Deep sky, Planetary Nebula
NGC 2371 and 2372, the double-bubble nebula in constellation Gemini. A couple teardrops with 14.8 magnitude star in between.
Images acquired from Louisville, CO. Temperature was 12 deg. F, no wind, transparency was good, and turbulence about 6/10. All images from Nexstar11, F3.3 focal reducer, and Stellacam II video camera, (4 second integration, 9/14 gain). 30 frames aligned, dark subtracted, flat field corrected, aligned, stacked, and enhanced with Registax4.
NGC 2903
by Vern on Feb.06, 2008, under Astronomy, Deep sky, Galaxy
NGC 2903 is 8.9 magnitude spiral galaxy in constellation Leo:
It was great ccd weather last night here in Louisville, temperature was 12 deg. F, no wind, transparency was good, and turbulence was better than usual, about 6/10. All images from Nexstar11, F3.3 focal reducer, and Stellacam II video camera, (4 second integration, 9/14 gain). 30 frames aligned, dark subtracted, flat field corrected, aligned, stacked, and enhanced with Registax4.
Terzan 11 Globular Cluster in Sagittarius
by Vern on Sep.12, 2007, under Astronomy, Globular Cluster
The image below is of a faint globular cluster in Sagittarius called Terzan 11. Dark area surrounding cluster is probably caused by obscurring dust which extinguishes light from an area that is rich with Milky Way stars (compare to star field on the left). The globular is listed as magnitude 16.4 so it is a tough object even for large aperature scopes. Tough to guess the classification as it so faint. Location was confirmed with DSS POSS2 image. I should have posted this before but I mis-filed the images and didn’t come across them until this afternoon.
Images were taken at Fox Park in Wyoming on July 15, 2007 at 03:35 am MDT with a Celestron Nexstar 11 telescope, F3.3 focal reducer, and Stellacam II video Camera. Stellacam set at 14/14 gain, medium gamma, and 256 frame integration (8 sec). Registax4 used to dark subtract, flat field correct, align, stack, end brightness enhance 30 frames.
Sky was mostly clear, some high thin clouds, transparency generally quite good despite the high humidity 70%, dew on everything, temperature about 38°F, and no wind.
