ngc 7635, the bubble nebula, and M52 in Cassiopeia
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This is a region of the milky way strewn with great objects. Here, in the center is the bubble nebula, flanked on the left by M52 and
on the upper right by emission nebula ngc 7538. The bubble is surprisingly faint, at least from my site, requiring a lot of integration.
I am a bit puzzled by the tendancy of the bubble itself to have a blue tint. Since the object is listed as an Ha emission, I suspecet that
the blue is a reflection cloud in front of the bubble. I let colors come as they may usually so there isn't any special blue push..
 Telescope Explore Scientific David H. Levy Comet Hunter Maksutov-Newtonian 152mm f/4.8 mounted piggyback on Meade LX 200 Classic 12 inch
Camera Canon XT/350d modified with Baader type 1 filter by Hap Griffin
Exposure  65 five-minute and 9 ten-minute sub-exposures at iso 800
 Guiding  PHD Guide from Stark labs with Meade DSI pro I on Meade 12-inch LX 200 Classic at f/3.3
 Software  Images acquired, calibrated, stacked and color corrected with Nebulosity 2.2.4 from Stark Labs. Further processing in Photoshop CS 3.
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September 2010, Julian CA