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Spile

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Spile last won the day on March 13 2021

Spile had the most liked content!

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  • Website URL
    https://astro.catshill.com

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  • Gender
    Male
  • Interests
    Analogue (live naked-eye) viewing and learning with binoculars and a 200mm Dobsonian mount reflector
    Looking for and finding 1) asterisms and constellations, 2) stars esp. coloured binaries/doubles 3) planets 4) meteors especially low and long ones 5) planets and planetary moons esp. Saturn, Jupiter and Uranus 6) Our moon esp. craters 7)DSO's (clusters, nebulae, galaxies) 8) ISS and Satellites
    Visiting dark skies 2) Alice Springs, Hawaii, North Norfolk and visitor centres like Keck, Leicester Space Centre

    Non-Astro: ESP32, Raspberry Pi, CAMRA Craft beer and real ale, FLAC audio, Jazz Rock, Krautrock, Ambient and Classical Music.
  • Location
    Bromsgrove

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  1. I use the fingertip and distilled water method as per my blog to clean my mirror every 18 months or so when the dust has built up to a degree that I am uncomfortable with.
  2. Another vote for the Baader Hyperion IV. I combine mine with a 30mm ultra wide when I need a bigger field of view but it’s not an issue for me in reality.
  3. If I had to collimate my reflector at a particular angle I would be worried.
  4. I’ve created a list of 500 double stars rated on a five point scale that you may find useful.
  5. This is what I get from your earlier image. I couldn't see the edge of the sight tube in the last image so you might want to take a picture through a cap. Nevertheless the secondary looks good.
  6. Ignore the clips until steps 1 and 2 have been completed so a=b=c=d and e=f and the cross hairs of the Cheshire eyepiece and sight tube and and the dark offset secondary reflection (x2) is offset toward the primary mirror.
  7. That has definitely not been my experience of CN ; the moderators there have never had an issue with my posts apart from kindly letting me know they had moved one to a different sub forum. The forum software on SGL is definitely better designed in my opinion.
  8. As you can see I am also a zoom fan. I went for the Baader but user reviews of the Svbony equivalent are excellent so I would go for that.
  9. Congratulations. A fantastic reference.
  10. Whenever I need to check or confirm details of a double star I always refer to Stelle Doppie https://www.stelledoppie.it/
  11. I would recommend checking the alignment of a primary mirror with a cap.
  12. One thing to bear in mind is that as well as using a star you will need to use high magnification. I centre (this is important) Polaris in the eyepiece using high (200X) power. I move the focuser slightly in and then out and compare both views. The out of focus views show unbroken, concentric rings.
  13. I couldn’t use a RACI without a straight through non magnifying finder.
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