Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Stuart1971

Members
  • Posts

    1,302
  • Joined

  • Last visited

Everything posted by Stuart1971

  1. I think it should be measured from the back of the flattener...not the back of the small spacer, so you may have too much back focus there... unless the small spacer is part of the recommended 56mm, you will need to check that...
  2. Hi, and welcome, lovely part of the country, Cornwall....
  3. Actually I don’t know at all....never had any dealings with ASI cameras, as have always been a CCD guy.... I knew the 120 was 1/3” purely because my mate uses one..and heard him say...but will look it up...
  4. So what size is the 290 sensor, as the lodestar is 1/2” square, and the ASI120 is only 1/3”..?
  5. Yes, it is mono.... But I am not 100% sure yet, as I don’t want to end up buying twice....I have the scopes I wanted, and imaging cameras, which are both SX, one mono SXVR H18 and colour SXVR M25c...so want to make the right choice, but it does seem that the pixels may be a tad too big....
  6. I have the chance to buy an x2 for a very good price, (£200) a bargain really, hence banging on about it...
  7. You said exactly that here.... “ASI290 has 2.9um pixel size, while X2 lodestar has 8.2um pixel size. One is too large and does not provide enough resolution to be able guide mount like HEQ5/EQ6” so would a 1.5x barlow on the guide scope help..? I have to say your replys are far to advanced for me to understand....sorry but true....but thanks for taking the time to try and explain....but I need lamens terms...
  8. So you are saying that the lodestar x2 has too larger pixels to guide an HEQ6 and EQ6 with a 60mm guide scope, yet many people do, and very well..so I am confused... If it helps I have the EQ8...
  9. Why do I need a pixel size of 6 micron to guide with my guide scope, which is 60mm 355mm, as the x2 lodestar with 8.2 still gives me a good sampling compared to my imaging scope, 1.33x.. see the example I posed above of my set up... and why Bin the ASI290 as that doubles the pixel size, so why not just use a camera like the X2 lodestar to start with unbinned..?
  10. Ok, you missed my point about the individual discussion with the other person on the thread....no worries....
  11. Yes I get that, but we were talking about imaging pixel scale not guiding....what is the point in imaging at less than 2 arcsec / pixel if the seeing will not allow, that was my point...? @michael8554 said I should be....
  12. Yes, but he was saying I need to image at 1 arcsec / pixel when seeing only allows 2 max... not guiding...
  13. This does not make sense, why do you need a resolution that is more than the seeing will allow, thats pointless... if your seeing will only allow a max of 2 arcsec/pixel why should you try and image at 1 . it’s the other way round
  14. Well I have no choice with that, as I have my imaging scope and imaging camera already....And seeing In the U.K. does not allow much below 2.0 arcsec/pixel anyway... My question was about the guiding part of it.... but thanks anyway...
  15. Ok, so I found an online calculator, and this is what is gave me, putting in the SX lodestar x2 as a guide cam choice, as I was considering one....but don’t know if this is good or not...
  16. Hello, I recently bought a Takahashi FSQ 85 imaging scope, f5.3 and an Tak FS60 f5.9 for use as a guide scope amongst other jobs... My imaging camera is an SXVR M25c Camera with 7.8 micron pixels, so all that being said what would be a good guide camera, ie pixel size to look for..? Thanks in advance.
  17. Very good....which I was that skilled... I too use the Baader FD system and find it excellent...
  18. Nothing to feel ridiculous about here....Excellent.....
  19. I thought the Espirits come with R&P focusers....
  20. Love them both, but the Top one is my fav too...
  21. Pegasus also work well with INdI...and FYI, FLO now own Hitecastro so ask them about the INdI driver, and see if there will be any development, also ask on the INdI forum...if there is no driver, there will be a high chance that someone on there will create one...
  22. That collimation looks pretty darn close to me, something else is at play there...maybe a reflection from the filter...
  23. Yes that is the one....you put desiccant tablets inside the tube, and screw into the port on the camera, and it will then soak up any moisture from inside the camera, this is to be done when not in use...
  24. There will be an optimum temp, but it will vary from one CCD camera to another, as for the colder the better, no, as if too cold it will just ice up. a good start would be -10, and I mean -10, not just -10 under ambient... My SX cameras have argon filled CCD chambers, so no air or moisture inside so nothing to freeze, but your camera is not airtight, so it will always have air in there which will hold moisture to freeze...the desiccant stick, if you have one, will remove a lot but not all...
  25. As has been said before by @PeterCPC here is the item you need.... https://www.firstlightoptics.com/adapters/astro-essentials-m48-camera-adapter.html
×
×
  • 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.