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.

  • Announcements


The Admiral

Advanced Members
  • Content count

  • Joined

  • Last visited

Community Reputation

1,386 Excellent


About The Admiral

  • Rank
    Sub Dwarf

Profile Information

  • Gender
  • Location
  1. I have heard that the early MF Nikkor 180mm f/2.8 is a nice piece of glass. If you can find one, and then not cheap. Ian
  2. Another Beautiful Site - Aurora

    Probably true, but you wouldn't know it from this! Perhaps the recent CME has something to do with it. Ian
  3. Another Beautiful Site - Aurora

    Well not here, unfortunately, but over Lapland! You really must check out https://lightsoverlapland.com/webcams/ All I can say is WOW!!! Here's a screen-dump, 2-3 hours ago. Ian
  4. RDF Issues

    Presumably you don't get double stars, just the red dot? One thing you could try is to remove it from the scope and holding it at the normal use distance, move it around and see if you can find a region where it isn't ghosted. You could do that in comfort inside. Also, try using each eye separately and together. If you still can't sort it, and if this has recently come on, it might be worth speaking to an optician. Ian
  5. RDF Issues

    Are your glasses bi-focals by any chance? Ian
  6. The "No EQ" DSO Challenge!

    Do you think? They're quite short subs, and you're not pointing in the worst direction for FR. Could it be a touch of coma? Ian
  7. The "No EQ" DSO Challenge!

    Thanks happy-kat. Yes, it was a frosty foggy morn, not long after sunrise. They don't make sunrises like that any more! Ian
  8. The "No EQ" DSO Challenge!

    The lens is not without it's issues. The early coatings were not as effective as they now are. Here's a pic I took, I suppose in the mid-70's, on film of course, so it's a scanned image. You can see the flare well defined, but then again the sun is quite bright. I was able to remove it in post-processing of the scanned image, not something you could do with an astro image. Incidentally, that's the natural colour, no filters were used. Well, I say that, but I probably had a skylight protection filter on it, so I guess the flare could be from that. It'll be interesting to see how it copes with bright star sources. Takes me back though . Ian
  9. The "No EQ" DSO Challenge!

    Well I guess whether you achieve infinity focus will be down to your Nikon-Canon adapter. Hopefully it will be sized so that infinity will be slightly beyond the focus range, in order to guarantee it. Ian
  10. The "No EQ" DSO Challenge!

    I don't think the Q200 was one of Nikon's finest lenses! Anyway, it'll be interesting to see what you get out of it. Ian
  11. Potentially I would guess. You are quite far North so I would imagine the clearer the view to the horizon the better. What about the rooftops in the desired direction, and is it easy to get a line of sight above them? Looking at the RMOB site, there's a chap on the West coast of Scotland, near Glasgow, so I guess it'd be worth a try. His detection rate does look lower than others more favourably placed, but it's hard to tell as there isn't a standard set-up. Anyone on here who does meteor scatter and who lives well North have anything to add? Ian
  12. Stacking

    Hmm, not sure what you mean by that. The X-T2 uses the X-Trans colour matrix, not Bayer, same as my X-T1. Ian
  13. Stacking

    I think it rather depends on the model of Fujifilm camera. If the sensor has a standard Bayer array then I would imagine, quite probably. On the other hand, I wasn't able to get the Fuji X-Trans raw files to stack in DSSs, because they don't use the standard Bayer filter array. My solution was to convert the RAFs into DNGs using the free Adobe DNG converter, and stack those. I now use AstroArt for stacking, though I've come to realize that even this can't do the job properly because the correct sequence for stacking should be to first carry out the calibration on the un-de-Bayered files, then de-Bayer, then stack. I can only get it to work by de-Bayering the RAFs on import, and does at least appear to give workable results. The only software that would seem to have the potential to do the job properly is Astro Pixel Processor, because this software doesn't use DCRaw to de-Bayer the files, but uses its own algorithm. Unfortunately, we are still waiting for the X-Trans algorithm to be incorporated. Hope that helps. Ian
  14. For what it's worth, I ended up using an LFA-Q Yagi from InnovAntennas (http://www.innovantennas.com/antennas-a-accesories/view/productdetails/virtuemart_product_id/371/virtuemart_category_id/1.html). Better I think than my home-made simple Yagi, and IIRC it has better rejection of noise and front-to-back ratio. It's actually squarer in outline than suggested here though, and does take up space. Had to assemble it in the loft in order to get it through the loft hatch . Ian
  15. Makes sense! It is interesting to see how things vary. Ian