Messier 42 (Orion Nebula) - Everyone's Favourite Nebula!

I think everyone loves Messier 42 also known as the Orion Nebula. Visual astronomers are treated to a lovely view in the eyepiece of even the smallest telescope and for astrophotographers it offers a wonderful bright and colourful target.

One evening I was trying to take images of various targets with my 80ED scope and didn't really get anywhere so in a last throw of the dice I decided to take a few exposures of the Orion Nebula. I set my camera to ISO 800 and ended up with 16 x 90 second usable images.

Whilst my image taking was a rather quick and messy process as I hadn't planned to image the nebula, my processing was not. I read up all sort of guides to try and work out how best to bring out the nebula in all its glory. I wanted to try and capture some of the fainter dust clouds but also didn't want to over expose the core. The result all several hours of processing work is below and for a first attempt I am incredibly proud of it.

A Couple of Clusters

I haven't yet had the courage to try and undertake guiding with my new astro-imaging set up so I tend to limit myself to exposures of 2 minutes or less. This means I lack the confidence to try and image some of the really faint objects in the skies and tend to limit myself to the more obvious clusters etc. Recently I spent a night trying to image two such clusters, the first of these is the famous Double Cluster in Perseus. Also know as Caldwell 14 or NGC 869 and NGC 884, this naked-eye open cluster is a regular target for visual astronomy due to how wonderful it looks in a wide field eyepiece.

I have to admit I didn't spend that long imaging it because I had decided I would spend more time on it when I get a Field Flattener but I did manage to still get 27 x 90 Second exposures at ISO 800.

The lack of Field Flattener has caused some distortion around the edge of the image but the cluster itself is quite well defined. The camera has actually picked up a fair bit more colour than I have ever managed to see visually which was nice to see.

The next open cluster of the night was one which is a little less known, The 37 Cluster (NGC 2169) in Orion. What I really loved about this cluster is that when I had previously looked at it visually it actually looked like its name.

The image I ended up with is composed of 15 x 90 second exposures at ISO 800.

The image has been cropped a fair bit to increase the size of the cluster in the image, although now I can't decide if I prefer the original wider field.

First Light with the Sky-Watcher 80ED Pro

So only a few days after moaning about the bad weather, we actually had a couple of nights with clear skies. It was also about -5ºC across the two days so I felt a little bit cold when I was out trying to use my new Telescope and Camera.

As it was my first night out I decided to be boring and pick everyone's favourite target, M31, aka the Andromeda Galaxy.

So after setting everything up and getting on target (which took about 2 hours) I was ready to start imaging! I basically took 16 x 90 second subs at ISO 800. I failed to get any Darks or Lights as I was beginning to feel the cold and just didn't have the dedication to stick it out any longer.

I processed the image in Photoshop and whilst I know I lost a bit of data in the processing, I am happy enough with this first attempt.

You may notice there are some issues with the focus on the stars along the left hand side of the image. This is because I believe I had some issues in the optical train which resulted in my DSLR sensor not being square to the optical path. The reason was that I struggled to get focus so ended up setting up a very badly held together "botch" job.

Since taking this image however I have found a little extension tube in my telescope case which states "DSLR Adaptor" rather obviously on the side of it. This would have given me a much more firm extension system to help achieve focus. I probably should have checked it out first but I was just a bit keen!

New Equipment = Terrible Weather

So for Christmas I got some new Astronomy gear to play around with. I got permanent control of the Modified Canon 700D DSLR I had played with previously which is basically a Canon 700D with the IR filter removed to increase the sensor response to red light.

In addition, I also got a Sky-Watcher Evostar 80ED DS-Pro Telescope. This scope is a Apochromatic refractor which will provide me with a much wider field of view than my 127 Mak.

In addition to the wider field of view it is also a "faster" scope meaning that more light will get to my camera during an exposure than would do on the Mak.

For anyone out there who likes the official specs then here they are:

Diameter: 80mm
Focal Length: 600mm
F/ratio: F/7.5
Fully Multi-Coated Doublet Objective Lens
FPL-53 ED Fluorite Glass Objective Element
Backlash-free 2” Crayford Focuser

Now all I need is the chance to use it!