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Posts posted by Shibby

  1. 23 hours ago, Tzetze said:

    I simply used the same technique on the RGB image while still in its linear form. I have to give thanks to Harry of Harry's Astro Shed and his excellent tutorial videos on Pixinsight processing.

    Seems I need to read some more tutorials or finally invest in Pixinsight - I still find colour balance tricky with PS.

  2. Thanks! I thought I'd attach a 100% crop of the galaxy (0.94"/pixel) - which is fairly unforgiving for most images, especially mine.


    15 hours ago, wimvb said:

    Just curious: how do you collimate the MN190?

    The answer is infrequently and with a collimation cap :blush: - I have a laser collimator but have never used it. When I received the 'scope it was fortunately well collimated and I only adjusted the primary. Still happy with the collimation, although the 460ex isn't a huge sensor.

    • Like 3

  3. Having only finished my first image of the year about a week ago, incredibly I now have a second one. We should try to remember that we do get decent weather in the UK sometimes after all!

    NGC 2841 is a neat little galaxy in Ursa Major. I say little, but it's actually similar in size to the Milky Way. The tidy appearance suggests that it hasn't had any recent interactions with its neighbours and apparently has a low rate of star formation.

    There's a nice variety of faint fuzzies in the background, which I particularly like about this area of the sky.


    • L: 38x600s
    • RGB: 3 x 20x300s
    • Total: ~11hrs


    • SW MN190
    • Atik 460ex
    • AP Mach1GTO
    • Guiding: QHY5L-ii + 50mm finderguider


    • Like 20

  4. Sorry to post again, but I realised I'd messed up the core with my Ha layer, now fixed. Why can't I get it right first time! Maybe you didn't notice, but it's really bothering me since I realised!

    Also forgot to mention - I really like that little galaxy in the bottom-right corner :D


  5. Here is my completed image of NGC 2403, captured in LRGBHa. It's taken some time to get all the data together and process. In fact, I think this is the first image I've managed to produce at all this year due to some circumstances.

    Strangely, you don't seem to see NGC 2403 as frequently as it deserves - it's actually quite a decent size in the sky and is visible all year round from the UK, albeit a little low in the summer. It's part of the M81/M82 group and, being face on, it does look somewhat like M33's little sister!

    The Ha really adds a lot to the galaxy, there's lots of interesting HII regions and I've tried my best to blend those in. I also tried capturing some shorter colour data for the stars, but my haphazard processing skills have let me down as it didn't seem to add much.

    Anyway, thanks for looking. Here's the details:


    • L: 39 x 600s
    • RGB: 12 x 600s each
    • Ha: 20 x 300s
    • Extra RBG for stars : 20 x 60s each
    • Total: 14.5 hours


    • Camera: Atik 460ex
    • Optics: SW MN190
    • Mount: AP Mach1GTO
    • Guiding: QHQ5L-ii & Orion mini guidescope


    • DeepSkyStacker
    • Photoshop



    • Like 17
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