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mikeyj1

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About mikeyj1

  • Rank
    Nebula
  • Birthday 25/04/62

Profile Information

  • Gender
    Male
  • Interests
    Astronomy, Astro-photography, Photography, Camping and Caravaning
  • Location
    Gloucestershire, UK

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297 profile views
  1. lol, sorry but cant help notice the circular saw blade used as a counterweight...interesting!
  2. focus tube out of square?
  3. M42

    Nice, unusual to see it without the blue coming through. M43 in particular looks good, and the detail in the area to the upper right
  4. Steve No you don't see the central obstruction, although it does reduce the amount of light entering. You should be aware that RC scopes are primarily used for astrophotography, although they can be used visually as well, but i am sure you looked at the altair astro webpage. Visually you are probably better with an SCT or MAK of 5-6 inches Dia, you will get the longer focal length with those also, and still retain the compact body. Having said that, try one out first, you wont get much light difference to the 102mm, just more magnification on planets HTH, Mike PS: see you already got a 200P, so honestly spoken, not sure why you would want the extra scope at all...and that's from someone that can justify almost any astronomical purchase ;-)
  5. 1-3 minutes is 'excellent' for unguided errors, I have never managed more than two with my AZEQ6, even spending an hour doing PA.. The illuminated reticule eyepiece is useful for sky alignment, getting the star right bang in the middle, but you already have the starsense, so that should be better.. Depending on where you are in UK in terms of Light pollution, 1 minute might not be too bad :-/ and you can take lots and stack them, have you tried that? DAN is right, however, guiding will give you what you want. Before you go splash out on guiding , wait for an evolution owner to offer some advice. You can either do it with a finder guider type solution or get the the dedicated guidescope and camera cheers Mike just seen your answer to Dan, that would be true on most scopes, but the evolution is supposed to compensate even for not having the mount level, can you check through the menu to see what the PA error is?
  6. Congrats on your achievement, that's preservation!
  7. So most of the time a dewshield isn't necessary on a reflector/don due to that the tube full length is effectively a dew shield in itself . A dew heater for the primary is good, and possibly the secondary. This is what mine looked like, (although frozen on outside) I am also just about to build a nichrome dew heater and pwm drive, let's keep in touch šŸ˜œ Some reasonable designs out there although not much on YouTube. Anyone got any good links? Mike
  8. Ok, you can find his YouTube channel here: https://m.youtube.com/channel/UCFK1huCp-0Y3COTfkoV6cVQ
  9. Thanks, interesting. would make a good 'experiment', let us know how it goes? Mike
  10. very nice images, i went to Cairns in Dec, quite disappointed with the high light pollution, although going outside to the countryside it was sooo dark! that Star adventurer seems a good bit of kit.. But how does it compare with taking 8 mins of say 20s subs and stacking? cheers mike
  11. sorry but i have to take issue with that. it is a pure reflector, no lenses, which is not true for the Dall K. here is a good link: http://www.alluna-optics.com/Alluna-Blog/111-blog-Ritchey-Chretien-or-DK.html i don't have either, but the common argument for a RC would be to compare to a Apo refractor, in which case its aberration free image is cheaper for the aperture, lighter to mount, and also faster cool down compared to an SCT, and coma free compared to a reflector (debateable?). For the downsides like collimation, i would ask to anyone that has one cheers Mike
  12. which eyepiece did you put in? start with the 25mm, it has less magnification, but you should also try it in daylight to get the idea of focusing and viewing, (and align your red dot finder (RDF) at that time
  13. if you have a focuser with two tightening screws, its better to push the collimator in so that it sits flush against the flange...dont use tape.. if your focuser is a 'self centreing one', then lightly tighten it.
  14. Do yourself a favour and get a couple of books: the Sky @ Night Astrophotography special, or 'Astrophotography on the go; short exposures with light mounts', from the Patrick Moore series, or if you have Kindle unlimited, there are several for free, including 'budget astrophotography, capture the cosmos without breaking the bank'. 'Make every photon count' is a bit expensive, but covers everything and will end up saving you money! Goto is useful if you cannot see too many starts because of light pollution, but there are plenty of options Best advice: find someone that already takes astrophotographs locally and get friendly with them