Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_the_milky_way.thumb.jpg.dbd8b15e81d11e9303c8d6ef1898ac08.jpg

Helen

Moderators
  • Content count

    8,867
  • Joined

  • Last visited

  • Days Won

    3

Helen last won the day on March 28

Helen had the most liked content!

Community Reputation

2,631 Excellent

About Helen

  • Rank
    Sub Giant

Profile Information

  • Gender
    Female
  • Location
    South Wales
  1. Helen

    Happy Coincidence

    Interesting John, and as you say great that a relatively inexpensive combo gives such good views I might try the Q Turret barlow with my Pentax zoom, which is also great for solar but less good in th dark! Helen
  2. Helen

    Sadre with SA and 90mm

    Nice Dave I'm just starting my SA journey too. My first proper test led me too to thinking about how to avoid being on my knees squinting with varifocals through the polar scope! The adapter for attaching my 135 Samyung lens to the asi1600 arrived this morning. (But as usual nothing is straightforward - I have a Sony mirrorless camera and so the lens has a very short distance between the rear and the chip... so no chance of getting a filter wheel in there... ho hum!) Helen
  3. Helen

    Pic Du Midi trip - excited Moi??

    Thanks Jake
  4. Helen

    Pic Du Midi trip - excited Moi??

    That looks great Michael! Hmmm solar observing... maybe a soalr filter in the hand luggage too? Helen
  5. So this time next week I'll be on my way to Pic Du Midi I travel to Toulouse on Monday, get picked up on Tuesday morning and taken to the Observatory. Then two days of workshops and two nights observing The trip is linked to my PhD, but I'm hoping the value is much wider than that! The workshop is designed to showcase/provide instruction on some new software developed by professionals to analyse amateur data for scientific purposes. There is now a recognition that time on big telescopes is in very high demand, and so observations are at best occasional. But linking in with the network of amateurs across the world provides the potential for accessing huge numbers of observations, closely spaced in time, and also to provide follow-up, quick-response observations. The main theme is around space-weather incidents: so solar wind, meteors/fireballs, impacts on moon/planets. I'm looking forward to learning and then coming back and sharing on here - we're hoping to really develop SGL's involvement with these sorts of scientific projects. And I'd be lying if I said I wasn't also looking forward to spending 2 nights observing at Pic Du Midi ... We will have access to a 400mm scope, a C11 and C14 and we can take our own too. Given those apertures I think the planets are covered! so I think I'll stick to widefield with a camera and a staradventurer, and probably some binos.... Helen
  6. Helen

    Ready for tonight...

    How did it go Agnes? I was doing something similar too! with a camera and a star adventurer. I learnt a few things: I need a way to see the polar scope without neck contortions, and a way of knowing I've nailed focus. Helen
  7. Helen

    BAA or not?

    You just sign up on line Michael - I've joined recently for the first time Helen
  8. Here's a quick animation from the last half an hour (cloud coming and going). It is certainly blue/green, but not very bright or spectacular! Each shot is 180s with a 123mm scope. I'll do some photometr on these tomorrow to estimate brightness. 2017s3panstarrs-8 July 2018.avi Helen
  9. Helen

    Please Explain Debayering

    Hi Alex, Each pixel in a colour camera with a bayer matrix has a filter over it - to let through either red, green or blue. They are grouped in four pixels and each 4 has 2 green, 1 red, 1 blue (to match the human eye's response to colour). If you capture in raw, all the camera downloads and is saved initially, is a measure of the photons captured by each pixel. It is quick as it just counts, it doesn't worry about what filter was over the pixel. The debayering process takes the measurements and then assigns the colour to the measurement - this gives the colour output. It is quicker to read /capture in RAW and then use software to debayer later. You just need to know the colour pattern for each group of 4 - but trial an error is quick to sort that out if you don't know! Helen
  10. Just budget 25 Euro for a licence for astrometrica to do the stacking and measuring for you I'm happy to talk you through this. Helen
  11. Gina, I love all sky shots Can you upload this to the gallery for the challenge Helen
  12. If you fancy doing some science with your images.... try astrometrica http://www.astrometrica.at It can be a little fiddly to set up, but once you've got the settings right for your equipment, location etc, it will calculate magnitude and position from your observations. It will also stack based on the actual movement rate of the comet It is good fun to plot the changing magnitude over time. You can also report to MPC and/or cobs https://cobs.si COBS has lots of other interesting comet stuff too Helen
  13. Helen

    An interesting transit!

    Awesome!!!!
  14. Helen

    Mercury ?

    Well done Dave I managed it too this evening (along with Venus and Jupiter). I'm really pleased as I have finally found a local site with a low western horizon (only downside was lots of insects though ) Helen
  15. Helen

    Comet 21/P

    I've managed to get it tonight Edit: Looking at what uploading has done to the brightness and quality, it might benefit from a bit more processing! H
×

Important Information

By using this site, you agree to our Terms of Use.