The following image of NGC 6888 combines the previous Ha image with new OIII data. The OIII data is has definite focus issues, and I think the previous image is better from an aesthetic point of view, but this does show more the OIII portion of the nebula. The Crescent Nebula (NGC 6888) – Ha/OIII […]
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 […]
In order to get a feel for how long an exposure is actually useful, I’ve been capturing more Ha data for NGC 6888. The following image is composed of 71 10-minutes subs. The Crescent Nebula (NGC 6888) – Version 2 Imaging Equipment: WO ZS 80 II ED, DSI Pro II, Razorback Cooler, Baader 7nm Ha […]
I’m still having some problems with the guiding camera connection randomly failing, but overall the imaging setup is working fairly well at this point. The following image was taken last night (July 23rd, 2008). It is composed of 29 10-minute exposures taken with Baader Ha filter. The Crescent Nebula (NGC 6888) Imaging Equipment: WO ZS […]
Three months have passed without any images worth posting. During that time I’ve had multiple problems with the telescope setup that I’ve just recently resolved—if I’m really lucky they will remain resolved. The first problem was an issue with the USB cables connecting the laptop to the cameras. DSI Pro/DSI II Pro cameras, at least […]