A Little Bit of Color

Last night’s imaging session was once again NGC 6888, but this time with an OIII filter. Unfortunately the sky became hazy quite early, so the OIII images are very noisy. However, here is what you get when you combine them with the previous Ha images (Ha/synthetic/OIII).

The Crescent Nebula (NGC 6888) - Ha/OIII Version 1
The Crescent Nebula (NGC 6888) – Ha/OIII Version 1

Imaging Equipment: WO ZS 80 II ED, DSI Pro II, Razorback Cooler, Baader 7nm Ha filter, Baader 8.5nm OIII filter, WO 0.8x Flattener II
Guilding: Orion 80mm ST, DSI Pro
Mount: CGE

One of the problems that I keep running into is that the camera never goes back on the telescope in exactly the same plane as it was before. This causes problems when stacking images, with some sections of the image perfectly aligned and others off by several pixels. This can be fixed to a certain extent with post processing tools, but I would really like to figure out a way to attach and reattach the camera without having the focal plane tilt.

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