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.


All Activity

This stream auto-updates     

  1. Past hour
  2. Yes, but one night when you look upwards and the sky is super clear........
  3. Fingers crossed for tomorrow as forecast not looking too good for next week.
  4. Also very interested to hear how it performs so am following the thread with interest.
  5. Before I reply fully, some questions for you, but I would say that you are at the stage of fine tuning your PHD2 settings. 1) I notice the 4 failed Calibrations before your final good one. Are you allowing PHD2 to autoselect a suitable star, or choosing your own? 2) The GA suggested 0.8 seconds exposure, which suggests very choppy Seeing, but you used 2.5 seconds - is your camera not sensitive enough to use faster exposures ? The GA is saying that to keep around the 0.10 Min Move, you needed fast corrections, and 2.5 seconds was too slow to catch the RA moves. 3) However I'd say 0.8 seconds is a bit excessive, but what are your guidestar exposures like at say 1.5 seconds ? Michael
  6. Oh wow! Thanks for posting. Will definitely try to observe this despite the low altitude... whenever the clouds allow! Just checked that there is a GRS transit tonight, but clouded out here.
  7. I was lucky enough to win image of the month from the national schools observatory Data was from their 2m Liverpool telescope, but my processing
  8. That's a good point. I use a Tracer but any good external source is better than internal batteries. The Lynx cable is good too.
  9. Looks very nice John. It will be very interesting to hear how it performs.
  10. Looks pretty good, bit of coma in bottom right but if mine had been like yours I wouldn't have returned it. Try to image a brighter denser starfield if you can as it will show up any faults better. Dave
  11. Tighten is a misleading word as it should not be tight. But it should not rattle either that's for sure, just contact the shop for advice, but if you 'tighten' it only do so to the minimum to stop the rattle the ring should still move reasonably easily after your done.
  12. Green pallet was all the rage at Chelsea flower show this year !
  13. This would have been a pretty massive (for a globular) three hour's data but as I forgot to remove my Bahtinov mask it's something over 1 1/2 hours of 2-minute subs. At least I can be sure focus was spot on - I have over 40 otherwise useless subs that prove it...
  14. Like Stu, I use mine a lot with a fully loaded ED80 which is about 4 kg but connected to a much better tripod. I use an EQ6 tripod. The stock item is not up to much. I also use a custom battery setup which ensures I can slew the scope around in sub zero temperatures all night.
  15. Loads of SAO numbers in for double stars.
  16. I have found @vlaiv insight and understanding on this invaluable. Really interesting you used : I followed vlaiv's instructions to the letter except I used dark-flats rather than short duration darks and integrated them using 'minimum' in PI. The minimum I achieved was zero with an offset of 50, gain 139. I've decided to up my offset to 56 just to ensure I stay above zero but to date I have not exceeded 240 s exposures and most have been at 120 s. After two plus years of using a CCD this CMOS stuff is all very new to me.
  17. They are baader but the other 3 are all fine
  18. So far I have data from last year and this year taken with the 200mm RC and the Tak 102 Hope get some shorter subs to get the "eye" over the lighter nights. click for full res
  19. Not sure if Im getting your point. You mean because of the size? ok, I attached a compressed png or download: https://drive.google.com/open?id=1FAvYLYhUXjLzzV1tuoqf6HaWBfcL8YgB
  20. I started Astrophotography back in September last year with a Star Adventurer and it was a great gateway in to this hobby. I recently treated myself to an iOptron CEM25P and this was my first chance to get it out and have a play. This is 3 versions of largely the same data. 18x300s Stacked with darks and bias in DSS. Mono version is just the Ha data processed in Photoshop. Red data has been run through StarNet++ and colourised Colour image is the Ha data used as luminance and added to 15x2min RGB images I took back in December from the same lens on the Star Adventurer. Canon 450Da ISO800, Canon EF L 70-200mm f/2.8 at 200mm f/3.5, Optolong Ha 7nm clip in filter and Optolong CLS clip in filter for RGB images, iOptron CEM25P and Sky-Watcher Star Adventurer
  21. Could you post as PNG to save downloading Tif Thanks Dave
  22. I've been using Sharpcaps smart histogram to measure my sky conditions. For recent narrowband it's been recommending 10 minute subs, around 100 gain and 5 offset. I've been setting it to 121 gain and 10 offset as 5 does seem low.
  23. I have nipped up filters in the past but have used either a cocktail stick or match to do the job, nothing worse that a screwdriver bit that slips across the glass. Alan
  24. Looks great. A tad green in the core perhaps. (Viewed on my mobile phone)
  1. Load more activity
  • Create New...

Important Information

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