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RobH

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Everything posted by RobH

  1. I had an ST120 for many years. It's a good basic scope for widefield views, and the eyepieces it came with, and the diagonal ( a 90 degree one, not 45 degree erect image one which you will need for terrestrial views) were fine....not the best by any means, but fine for starting out. Trying to get decent results at higher magnifications than you can get with the supplied 10mm eyepiece is a waste of time. It's a basic achromatic short focal length lens, and these sufferfrom chromatic abberation and can only take so much magnification before the image becomes a blurry mess. Don't get a barlow with it.....the last thing you want is more magnification. Used for what it's designed for, widefield views of star clusters etc, it's a great scope for the price, but if you want high magnification views of the moon and planets, then get a Mak or similar, as has been suggested here earlier.
  2. Just come across this, and all I can say is that this is, by a country mile, the best piece of astrophotography I've ever seen......staggering gentlemen!!
  3. From the album: Rob Hodgkinsons images

    Messier 66 (NGC3627/ Arp16) Messier 66 (NGC 3627) is an asymmetric spiral galaxy about 36 million light years away from us in the constellation of Leo. It is one of the famous 'Leo Triplet' of galaxies, the others being M65 and NGC 3628. Its diameter is about 95,000 light years. It has a visual brightness of magnitude 8.9, making it fairly easy to spot in a small telescope. I was surprised to find that I had managed to capture the tidal tails from my rather light polluted site. As they were only just above the sky background brightness, I needed quite a lot of integration time in order to stretch them and separate them from the background without the image becoming too noisy. The tails were formed by a past interaction with NGC3628. In this image, I've added Hydrogen alpha data to the red channel at 100% opacity using ‘Lighten’ mode in photoshop in order to emphasise the strong regions of star formation, a process likely to have been set in motion by the past encounter. Imaging details are; Luminance - 80 x 480s Red - 28 x 300s Green - 29 x 260s Blue - 28 x 300s H alpha - 18 x 1200s All subs binned 2 x 2 Total imaging time - 23 hours 42 minutes. Telescope - 12 inch Ritchey Chretien @ F5.3 Camera - Atik 460 EXM Baader filters. Imaged over the course of the spring from Weymouth, Dorset, UK.

    © Rob Hodgkinson 2014

  4. Fantastic image. Easily the best I've ever seen of M31......you've raised the bar not by an inch, but a mile :-)
  5. From the album: Rob Hodgkinsons images

    © Rob Hodgkinson 2014

  6. From the album: Rob Hodgkinsons images

    NGC891-November 2013

    © rob hodgkinson 2014

  7. From the album: Rob Hodgkinsons images

    This years version of this excellent target!

    © Rob Hodgkinson 2013

  8. From the album: Rob Hodgkinsons images

    © Rob Hodgkinson 2013

  9. RobH

    M82 LHaRGB 2013 crop

    From the album: Rob Hodgkinsons images

    © Rob Hodgkinson 2013

  10. RobH

    M51 L R(Ha)GB 2012

    From the album: Rob Hodgkinsons images

    3 years worth of M51 data,,,,my deepest so far.

    © Rob Hodgkinson 2012

  11. RobH

    test

    From the album: Rob Hodgkinsons images

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