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About dweller25

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  • Birthday 25/10/1960

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    Ramsbottom, Lancashire
  1. Mars

    It helps when the planet is 64' high And I suspect there is no jet stream I need to move.....
  2. F10 apo's?

    Probably because :- 1. You can get the same colour correction out of a shorter f/ratio which is lighter, shorter and therefore easier to use. 2. The trend is more towards fast focal ratios for imaging.
  3. Mars

    A great image - thanks for sharing
  4. Pythagoras with C14 Edge

    Very impressive photo Avani
  5. Attention ~ Mak and SCT owners

    I have always struggled to get the best out of Mak's and SCT's as I could not get the primary and the corrector to cool at the same rate - the corrector would dew up long before the primary had cooled. This improved when I bought an Intes Micro with an internal fan that cooled the primary very well but the corrector still dewed up even with a long dew shield. The thermal insulation method keeps the primary, OTA tube and corrector at roughly the same temperature and warmer than ambient - so no dew. My first attempt at this showed no advantage as I only had one layer of reflectix around the OTA, I now have two layers, with the top layer extending backwards further towards the visual back. I also covered the dew shield with Reflectix - I recently collimated a 6" SCT 40 minutes after taking it out of the house (at 22'C) into a 2'C ambient temperature. I collimated on a stable in focus star showing a tight airy disk around it at x300 - that's a first for me.
  6. This may be of interest https://www.cloudynights.com/topic/605123-insulation-jacket-for-mak/
  7. Hello Rohit. Some tips for best results. 1. Make sure the scope has settled to ambient temperature - a good 30 minutes for a 100mm scope. 2. Observe when the planet is due south - it will be at its highest. 3. Be patient - Jupiter is quite low in the sky for a few years 4. A little bit more magnification (x100) would help Hope that helps
  8. Jupiter 30-01-2018

    Sorry, cannot help you with the question but just had a look in your gallery - there are some really great images there
  9. Which Tak

    Tak sharp
  10. Which Tak

    I compared a 100ED F/9 to my TSA102 - the Tak won but it was closer than the cost of the scopes would suggest. 120ED F7.5 against your new Tak - hmmmm - that will be interesting.......
  11. Which Tak

    Very nice - and a proper Tak ....... F/8 or over
  12. Which Tak

    'sraining tmorro
  13. Which Tak

    @Pig - you didn't add F15's FS128 .....
  14. Which Tak

    Oh sorry Stu/Pig - I posted much earlier but missed this new poll ..... I have a TSA102 and an FS128
  15. Hello, Do you have an 6" SCT finder bracket for a 6x30 finder as in the photo that you no longer need ? If so please contact me as I would like to buy it. David