Jump to content

stargazine_ep38_banner.thumb.jpg.6fe20536a22b28c17b2ee1818650993c.jpg

lunator

Moderators
  • Content Count

    7,607
  • Joined

  • Last visited

Community Reputation

250 Excellent

About lunator

  • Rank
    Moderator

Contact Methods

  • Website URL
    http://www.doublestar.org.uk

Profile Information

  • Gender
    Not Telling
  • Interests
    www.doublestar.org.uk
  • Location
    Buckinghamshire

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Just checked the 6th orbit catalogue and themes orbit has it slowly closing again. Only hundredths of an arc second. I hope to try and get a pic of this soon as the last one was10 years ago. Cheers Ian
  2. Good catch of Tegmine it is slowly opening. I caught all 3 at x187 last night. I forgot to try a lower may as it has been a little while since I looked at it and although I know the orbital motion I was surprised how different it looked compared to last time. Regions is one of my fav doubles. Hence my avatar cheers Ian
  3. Hi Jack, how are you finding focusing? I am new to imaging and objects 'disappear' very quickl outside of focus. Try housing on a bright star 1st to get you close. I have a bhatinov mask to help. cheers Ian
  4. The 1st edition of the CDSA is more about the 'nice to look at' pairs. The main issue is some of the data is out of date and I have found a few typos. The second edition has improved data but there is more of a focus on physical pairs and less on the showpiece pairs. Cheers Ian
  5. Craig Good image. Getting images of close doubles is tricky. I used to do afocal imaging and below 3" was a challenge. Cheers Ian
  6. Hi Wibblefish I have had a couple of clearing nights here so I thought I would have a look at Rigel. 23/01/2021 In my new ST80: 80mm/400mm on an alt/Az mount it took x133 to split Rigel. I was then able to just split them at x100 with a 4mm orthoscopic. 25/01/2021 Using my OMC250. 250mm/2250mm on an EQ6. I was able to split Rigel at x70. This is the lowest magnification I can get on this scope. It was close but obvious. It was very clear at x94. With your scope the pair should be split at x110 but I think the seeing will make it quite hard. If you can get your ma
  7. Hi Wibblefish Rigel can be a tricky split. It is quite low from the UK. Bruce MacEvoy has a rule of thumb that implies Rigel would take about x80 Mag to split. In my experience this rule can be slightly optimistic and I would go for a higher Mag say x100+ if you can. Once you have split it you will be able to see it with lower magnification. Cheers Ian
  8. Hi Alan After you have checked the collimation of your scope I recommend looking at theses 2 doubles. Eta Cassiopeiae and Castor (Alph Gem) They should be easily split in your scope. Eta Cass is 3.5/7.5 magnitude pair with a sepaeration of 13.5" Castor is 1.6/3 magnitude pair with a seperation of 5.2" let us know how these go. cheers Ian
  9. Hi Dave Many thanks, might try that next, I have limited myself to 1000 frames so far. Cheers Ian
  10. Hi Dave Good pic do you take the 5000 frames in one go? Cheers Ian
  11. Hi Mark Glad it has helped. Look forward to seeing your pics. Cheers Ian
  12. Hi Keith I have included the log from Sharpcap at the bootom of the post. My process is as follows. I had let the scope cool. I use sharpcap to do the capture as it the software I know. I leave everything on Auto as it does a pretty good job. I check the alignment on the camera so it is in a pretty good N/S is up/down orientation I do a rough focus and then go back and forth a few times with the fine focus to see if I can get the view as sharp as possible. I usually take 2-3 captures before I check focus again. I stack in AS!3. I load the AVI and go
  13. Hi Keith, I will dig out the details. The scope is an Option optics OMC250. I use a very old Dell laptop. I do know it was set up maximum frame rate. 30fps. Cheers Ian
  14. Starting to get a feel for the ZWO 120 mc-s Craters; Clavius, Maginus and Tycho. Cheers Ian
  15. Steve very good pic. cheers Ian
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.