Good transparency and cold temps helps to get good images at ISO 800. 5 minutes subs are not too noisy and stack up nicely. This image is only 110 minutes of integration and could use more time, but it came out fine for an unmodified camera.
The full size version is here.
It was very clear on this night at one point and Lovejoy had set, so I shot a few sub-images of Orion’s Belt to kill some time. Although the Lumicon Deep Sky filter lets me go deep, brighter stars have ghost reflections off the filter and I had to clone them out. There’s still a few remnants of them left.
After the moon had set on Dec 1, 2014, I decided to let the camera and guiding run while I slept and take images of the Horse Head Nebula region. I managed to get 33 good sub-images before the clouds messed up the tracking.
One of my first images shot through a telescope at prime focus was of M42, the Orion Nebula. It was taken with my Celestron C8 SCT and 35mm film. Here’s the latest digital version of the same object taken with the same scope. I had to work hard aligning and collimating the scope before taking the sub-images for this, but the old girl is back in shape and delivered some useful data for this often imaged object. It just fits in the field of view at 1260mm of focal length.
Here’s one that’s in progress. I shot this area over two nights. I have very little of the Horse Head region from these sessions, but another 40 subs of the belt stars upper frame area. I should be able to put something together with other data from older sessions and get a somewhat complete mosaic image. (Update: Yes, I was able to add some old data and smooth it out.)
I had time to kill while waiting for Orion to get into position, so I shot 40 x 2 minute sub-images of the Pleiades at ISO 3200. I did not spend much time in post processing this, but it came out half-decent regardless.
Over 3 hours worth of data in 5 minute ISO 1600 sub-images were used for this image of the PacMan Nebula. It came out alright, I guess. I didn’t have to do much noise reduction on it and it still seems reasonably smooth.
Here is the “Little Dumbbell” Nebula, otherwise known as Messier 76, NGC 650/651, the Barbell Nebula, or the Cork Nebula. It is a planetary nebula in the constellation Perseus. I had never imaged it before, so now I finally got something on it.
The Gamma Cass area with the, “Ghost Nebula” (IC63) was an appropriate target for this time of year with Halloween just around the corner. This was actually just a test run for how well ISO 6400 would work with 80-100 sub-images. Click the image for an enlargement or click here to see the full size version.
The obligatory Helix Nebula photo for 2014. This was taken in the early evening hours of October 24th, 2014.