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Mr niall

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About Mr niall

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  1. That's a book for telescope astronomy specifically. While an excellent book indeed, it may not be great for those just interested in astronomy in general which is what the OP asked.
  2. Just to be 100% clear - longer focal length eyepieces don't exist purely as stepping stones to the higher focal length eyepieces. Each eyepiece serves a different function and has its place - while it is true that the larger eyepieces with longer focal lengths have lower magnification and a wider field of view that doesn't mean that their job is purely to centre stuff in the eyepieces so you can get to the "good high power eyepieces". I'm sure you know that already I just thought I would reinforce the point based on some previous comments. If you haven't already I would recommend reading the following:
  3. Yep sorry my bad! You can do it through the secondary mirror adjustment screws too. Just be really ginger, back off each of the three screws a quarter turn then you’ll have enough room to tighten it into shape. Try to avoid twisting the mirror if you can. The trick is to make sure you can always see your three primary mirror clips. The good news is once you’ve got it it’ll stay like that for months/years.
  4. I’ve just bought the same scope and it was identical. It’s 99 percent fine. Don’t overthink it - just adjust the primary mirror so the hole in the collimation cap is in the centre of the hole on the mirror and you’re good to go edit; ignore that sorry didn’t realise it was a glued primary!
  5. I use this website to double check if anything is there: https://www.spaceweather.com/
  6. What is you are interested in pal? Are you looking for an all round all-purpose guide to the universe or something more specific or tailored to a certain area? I haven't read that book sorry BUT... I do have this one: https://www.amazon.co.uk/Stars-Definitive-Visual-Guide-Cosmos/dp/0241226023/ref=pd_lpo_14_t_0/257-0916732-7095914?_encoding=UTF8&pd_rd_i=0241226023&pd_rd_r=123be89c-23e7-40e6-ba5e-2c824caa95b5&pd_rd_w=rMi90&pd_rd_wg=zIolz&pf_rd_p=7b8e3b03-1439-4489-abd4-4a138cf4eca6&pf_rd_r=0FXJ9JPH5E79NW2G7XYM&psc=1&refRID=0FXJ9JPH5E79NW2G7XYM And I really like it - has some amazing facts, illustrations, a big section about planets, suns, nebulas - and also a huge section at the back with great maps of the night sky and where everything is.
  7. Are you talking about EEVA (electronically enhanced visual astronomy) - you may want to move your post over to that forum if so. Celestron 925 is a really good choice for this sort of thing as it is definitely a jack of all trades scope for EEVA work.
  8. The good news is none - no filters are required at all in DSLR astrophotography.
  9. I bought these from FLO at the beginning of the year to use with my long focal length refractor. However a whopping change in glasses prescription at the end of Feb means I'll have to look at something with even more eye relief at smaller focal lengths. They have had almost no use and are in excellent condition. Postage is included. Any questions at al please let me know. Paypal preferred.
  10. Yes I've used one they are brilliant (but no finder scope) The mini mak has a focal length of 750mm. So if you add a 2x barlow to a 15mm that gives you an effective 7.5mm that's 100x. Maximum usable magnification is a bit of a moving target but some people say 50x per inch of aperture or 2x aperture in mm - so lets say 140x would be your max. So far so good - but... that 7.5mm effective eyepiece would give you an eyepiece of 0.7mm - which will make things a bit dark at the eyepiece but is still usable. In theory - for targets like the moon and planets - that would be a fairly reasonably absolute maximum I'd say. But only for moon and planets.
  11. I received this for Christmas but haven't really had an opportunity to use it (I have used it a couple of times to make sure it works!). I'm thinking a 135mm might suit me better. It is a brand new, boxed Canon 50mm 1.8 STM (the latest version), boxed with all literature, effectively unused except testing. £70 inc postage. paypal preferred (either transfer as friends or with extra 3% for buyer protection)
  12. All I'm moving on my Omegon Minitrack - this is the newer LX3 version - it is a heavier duty version of the original with improved housing and a larger Teflon bush. Weight limit is increased over the original too - now to 3kg, and of course it now has a proper polar scope which makes life much easier. Also included is the Neewer heavy duty (8kg) ball head, and the Neewer mini travel tripod, which also has a ball head and level, making this the teeny tiniest portable tracker imaginable. Asking for £120 including postage - paypal preferred (friends or add 3%).
  13. very nice! Although I think the labels for M57 and M27 might want to be swapped around.
  14. I was wondering if there was such a thing as a light pollution reducing filter that would work with reasonably widefield lenses (eg up to 100mm) on a DSLR? If I could just extend my exposure times up to about 60 secs I'd be really happy indeed! Currently at 50mm and lower I'm getting completely washed out. I guess that is the peril of living in suburban skies! And the gradual change from sodium to LED street lights does kind make it more challenging to pick a light pollution filter as I can't work out what it is I'm actually looking for... I've seen some that look quite good, but some of them seem quite expensive and I'm a bit nervous about forking out if I'm not going to notice any massive improvements. https://www.amazon.co.uk/gp/product/B07FQD5D8R/ref=ox_sc_act_title_1?smid=A3ICDZYF91YIY1&psc=1 https://www.firstlightoptics.com/rgb-filters-filter-sets/optolong-l-pro-light-pollution-broadband-filter.html https://www.firstlightoptics.com/optolong-filters/optolong-cls-light-pollution-filter.html https://www.firstlightoptics.com/light-pollution-reduction/astronomik-cls-filter.html
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