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  2. I agree with Alan on both points. I'd probably go with b) personally. However, if you want to stick with the LM7808, perhaps this will help: https://www.petervis.com/electronics/Voltage_Regulator_Heatsink/Heatsink_for_TO-220_Voltage_Regulator.html James
  3. According to Elon Musk once the satellites settle into their orbits , they will be not be visible at night. They will however be visible around dusk and dawn before passing into the Earth's shadow. In the below link, Elon responds to the doubts! All are not convinced! Personally it makes me kinda nervous as I've just spent a large sum of money on a new mount, cameras, scopes, battery etc! https://www.google.ie/amp/s/www.geekwire.com/2019/sightings-spacexs-starlink-satellites-spark-awe-astronomical-angst/amp/
  4. Hey all, I opened up my scopes today to find fungal growth on both my refractor and SCT lens and corrector respectively. I live in a humid climate but I’ve never paid much attention to mold until now. Does anyone know how, if even possible to get rid of it? I heard that they ruin coatings, so I’m erring in the side of caution here. Thanks!
  5. Was everything balanced in the mount? I don't know the answer. Like I said, at 1000mm focal length, you really want good guiding. I was shooting at 570mm last week with essentially the same mount, good guiding and I still got slightly eccentric stars. Tbh, if you got around 30% good images without guiding, that's pretty good. Keep them and try to get guiding sorted for the next night.
  6. Your Brest and cheapest choice is the ef-s 50-250mm , they are cheap and you get a very good results after staking. But if you're planning to make DSO in future, you would by an EF lens. This image was taken with EF-S 50-250mm lenses. Best regards
  7. Sorry James. Should have closed this earlier. The motors work fine . Thank's for the offer. Cheers Dave
  8. And if I get stuck, Lorna call always push me. She said if I'm going that she's coming with me.
  9. I've printer dew shields for my lenses which have been quite successful. That Samyang is a nice wide-angle lens - wouldn't mind one of those Widest I have ATM is 28mm except for the ASC.
  10. Hi David, No it was a still night. No wind at all. Polar aligning was with eyeballing, it wasn't perfect. But if it was bad, how I got that good images? Good images rate was 1:3.
  11. You'll have a great advantage, already owning your personal Mars "rover".
  12. Linear regulators like the LM7808 do need to be used with a heatsink that ideally has free air movement around it so putting it into a small box is not ideal, there are a few options that would work. a) Mount the IC inside an aluminium case with the heatsink tab connected to the metal (think the tab is connected to ground but check or use an electrical insulating washer etc). b) Use a switching regulator (normally called buck converters) as these have greater efficiency and dont get hot and are available with built in volt meters if needed. Alan
  13. Put your 200mm Newtonian on the EQ5 for imaging the Moon and planets and swap it out for a good small refractor for imaging DSO's.
  14. I feel there are some very nice 80mm and 70mm scopes out there and of course more affordable, Gina's suggestion is nice the Espirit 80mm . TS did a nice 80mm carbon fiber scope at a bit over 1000e think they still do, never seen one but I know someone that has one and he loves it.
  15. They do, at least for the manual that came with my v5 handset...
  16. My diary is clear for 2020, so I though.....why not!!!!. I call shotgun.
  17. In excellent condition with the worthy optional extras of non marring compression rings to vis back and the superb Altair handle. Its ideal if wishing to max out your quarks full potential £300 collected (dalgety bay)
  18. Yes ... I tend not to bother with galaxies and nebulae as I have never had much joy with actually observing them I am sure this will change when I move to a house that is in a darker location and buy a larger aperture scope
  19. As the rest of the family has been seeing the observatory slowly being constructed over the last year and we had some clear sky last night I thought I'd have a go at something fun to show them now I've reached the point that it's usable (though some way from complete), so I set the 450D up on a tripod with the kit 18-55mm lens wide open, pointing back at the house with the intention of taking some subs to combine into a star trail image. Sadly the clouds didn't appear to have read the forecast and the five hours of clear sky I was promised turned into an hour or so of mostly clear sky, and the cloud was worst to the south west -- the direction of the house. So this is all I ended up with: Perhaps the most interesting thing about it is that there are no lights on in the house at all. The lit windows are all illuminated by power indicator LEDs on chargers, clock displays and suchlike. It's not all negative though. I've been visual-only for quite some time whilst we've been having work done in the house because it made sense to pack kit up to keep it out of the dust, and during the construction of the observatory, so this is my first image of any kind in a fair while. I did also grab some frames looking back over the observatory towards Cassiopeia, but struggled with the lens dewing up. I don't have a hood for this lens which probably doesn't help (and in fact the ones I've found online don't look as though they'd be much help anyhow). I might try a dew heater, or attempt a 3d printed hood of my own. I should also have a go with my 14mm Samyang, though I suspect that will be even more prone to dew. James
  20. One Sky-Watcher Evostar 80ED DS-Pro OTA. Customer Return Telescope A-OK but case has minor damage. Includes full manufacturer's UK warranty. £359.00 £329.00 (saving £30.00)
  21. Planetary, start clusters, lunar, etc. should be alright, I agree. Galaxies and nebulae not so.
  22. Today
  23. It is pretty dark Gina, I sat in the garden last night looking at the stars around 11pm and it was pretty decent, maybe AP need conditions to be a lot darker, but on the whole it’s worth a shot
  24. Was it windy by any chance? That's a big scope you've got in your signature. At that focal length you'll really want good polar alignment and good guiding.
  25. Your requirements are contradictory - I suggest refining your requirements or looking at multiple setups. Re the mount: portable means lightweight while suitable for astrophotography means solid and heavy. Nothing wrong with the Meade LX85 AFAIK but I would not have described it as 'lightweight'. I don't have a full spec for it but with 33bs capacity I get the impression it is on the limit of what I would like to drag outdoors and assemble without assistance. What kind of astrophotography? Planetary and deep space have totally different requirements. Re the scope : portable is easily managed (buy a small one), but multipurpose does not work. Deep space astrophotography points to a small high quality refractor, general observing, depending on who you listen to, means any sort of scope (within reason), planetary observing likewise, while planetary astrophotography seems to require the biggest SCT you can afford and get mounted up. The SCTs score on usability - they are shorter and lighter than the equivalent in other designs, the eyepiece remains in a convenient position regardless of where the scope is aimed, and they have a great depth of focal range facilitating the attachment of various accessories.
  26. Thank you so much, Peter. Amazing. Yes, it looked like this: https://www.theverge.com/2019/5/25/18639905/spacex-starlink-satellites-video-dr-marco-langbroek-netherlands although dimmer, as we were observing with the naked eye. Very spectacular. Best regards, Grae
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