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Aramcheck

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About Aramcheck

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    Star Forming

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    Leeds
  1. The Leeds Astronomical Society have a Ross telescope which was obtained in 1859 when the soc. founded. It's said that Sir John Herschel had some involvement in it's procurement. Here's a couple of recent pictures of it from last year around the time of the club's 160th anniversary (on a more modern mount!)
  2. Having a star atlas like Sky & Telescope's Pocket book, or an program like Stellarium can help learn which stars are where... I often check on Stellarium which stars are likely to be visible from the back garden before starting to set up. As @Ouroboros says - using the finderscope helps to roughly locate the alignmnet stars first is a great help too. You can also get an eyepiece with an illuminated reticule too if you wish, to ensure you get the alignment-star in the centre of the field of view. Cheers Ivor
  3. We started out with a SW 130M, a close relative, about 16 months ago. It's a decent scope for a beginner and I found the best upgrades to be replacing the red dot finder with a telrad & adding a 9x50 right angled finderscope. A neutral density filter proved useful for viewing the moon & a light pollution filter too... also a star atlas book - eg the pocket one produced by Sky & Telescope. We've subsequently upgraded to a much more expensive GoTo but I regret selling the 130M... PS: At higher magnifications (whether via a barlow or shorter focus eyepiece) you'll find that it's harder to get good focus & targets will drift out of the field of view much quicker... Cheers Ivor
  4. This might help:- https://pixinsight.com/doc/scripts/SubframeSelector/SubframeSelector.html#subframe_property_SNRWeight
  5. Thanks @TerryMcK the ioptron iPolar solution looks really good! https://youtu.be/4MXjN34Om_g
  6. I have an AZ-EQ6 GT Pro & find the polar scope to be very frustrating. You can change the level of illumination on the Synscan handset Utilities Menu (Polar Scope LED option) and consider getting a right angled adapter like this: https://www.firstlightoptics.com/adapters/astro-essentials-right-angled-eyepiece-for-polar-scopes.html (I made my own using a Neewer DLSR Right Angle Finder from Amazon & a plastic plumbing end cap, which works after a fashion). I still find it very difficult to get a good polar alignment, but once I think I've got it & have done a 2-star alignment, I fine tune it using the procedure in section 11.3 of the Synscan manual ("Polar Alignmeent without Polar Scope"), where having done a 2-star align you press "Menu" & then "Alignment\Polar Alignment" & follow the prompts to fine tune the altitude & azimuth on the mount. I agree that having to rotate the RA in order to orientate the polar reticule is very awkward... I think that's where I get most of the error... but once you've got it close & have gone through the 2-star align & fine tuned the alignment as above, you should be ok. I've not had any problems with the Azimuth bolts - remember you have to slacken one off before you can adjust the other... There's no need to loosen the central bolt! Regarding the setting of the Altitude to 51 deg... I think that will only give you an approximate starting position & hence the need to use the polar scope. It will also vary a bit, if you haven't got the tripod level to begin with. To make sure I'm aligning on Polaris, I've sometimes resorted to fitting my scope / finderscope & telrad on the mount, so I could be sure I was aligning to Polaris & not some other star... You will also need to check (preferably in the daytime) whether the polar scope reticle is aligned ok, using something like a distant aerial to check position (as per section 3.4 of the Mount manual). Cheers Ivor
  7. From "Introductory Astronomy & Astrophysics" 4th edition - Zeilik+Gregory - (p. 284) - I think published 1998 but Fig. refers to 1982/3.
  8. Apparently Betelgeuse comprises of three stars... (Sorry it's not a good scan)
  9. Welcome to the forum! I'd suggest downloading a copy of the free Stellarium software. Try looking for the Orion Nebula (M42), Andromeda galaxy (M31) & the Double Cluster... Don't expect to see as much detail as folks get with taking pictures though. I also find a pair of binoculars (10x50 or 8x42) & a pocket sky atlas useful too... Cheers Ivor
  10. So far my 'go to' reads have been: Patrick Moore's Astronomy (Teach Yourself series) Wonders of the Solar System and the Universe - Brian Cox Mathematics of Astronomy (Student's Guide) - Daniel Fleisch & Julia Kregenow Astronomy - A Physical Perspective - Marc L. Kutner Cheers Ivor
  11. Hope this Press Release doesn't break SGL rules! (Mods please delete if so) Cheers Ivor **************************************************** News Release from Andrew Griffith MP Immediate Thursday 30th January 2020 ‘Dark Skies’ Parliamentary Group launched MPs and Peers have launched a new All-Party Parliamentary Group for Dark Skies in the Houses of Parliament to bring attention to increasing light pollution and the importance of preserving the ability to see a dark sky at night. The group was launched by Co-Chair Andrew Griffith, MP for Arundel & South Downs and will also be Co-Chaired by Lord Martin Rees of Ludlow, the Astronomer Royal and former President of the Royal Astronomical Society. The inaugural meeting took place this week and set out the purpose of the APPG for Dark Skies. Its aims are to: · Highlight the importance of preserving the ability for citizens to see a dark sky at night; · Promote the adoption of dark sky friendly lighting and planning policies; · Protect existing UK Dark Sky reserves and support potential new reserves; and · Collaborate with international groups such as the International Dark Sky Association (IDSA) and countries hosting Dark Sky Reserves - currently Canada, France, Germany Ireland, Namibia and New Zealand. Dr Lucie May Green addressed the inaugural meeting as a Guest Speaker. Dr Green is a Professor of Physics and a Royal Society University Research Fellow based at the Mullard Space Science Laboratory, UCL’s Department of Space and Climate Physics. She was also the first ever female presenter of the BBC programme,’The Sky at Night’ and is very active in public engagement, regularly giving public talks as well as supporting her departmental public engagement programme. The APPG has already gained support from Parliamentarians across the political divide with a shared interest in providing dark skies over the UK. The UK already has four internationally accredited Dark Sky Reserves which are the Brecon Beacons National Park, Exmoor National Park, Snowdonia National Park and the South Downs National Park with Gower in the process of applying. The first recognized Dark Sky Park is in Dumfries and Galloway. Andrew Griffith MP said: “I am delighted that the campaign to preserve our Dark Skies at night and to fight unnecessary light pollution has now reached Parliament where our laws are made. If we are to inspire future generations about the wonders of our universe – and to recognise just how special our planet earth is – it is essential that we preserve the ability of current and future generations to see a clear night sky. Light pollution is 100% man-made and is easy to remedy through improved design, better enforcement of planning guidelines and innovative new technologies.” ENDS For further information please contact Chris Cook on 07838 911116. Notes for Editors 1. For further information on Dr. Lucie Green see here: http://luciegreen.com/ 2. For further information on Dark Sky Designations see here: https://www.darksky.org/our-work/conservation/idsp/
  12. Also worth looking at using a desiccant in the focuser draw-tube. I use these:- https://www.firstlightoptics.com/adapters/astro-essentials-dual-fit-desiccant-cap-red.html I keep our newt OTA in a carrying bag & put a bin bag over the mount... Cheers Ivor
  13. Thanks @Grumpy Martian it was good to see an episode(*) that dealt with issues surrounding light pollution! Cheers Ivor (*) "Scuse Me While I Miss The Sky"
  14. With GIMP I've found the successive stretching, as shown in this video, works quite well:- https://youtu.be/fkldylli094?t=1088
  15. In Urban areas there are also options to dim lights using a Central Management System & Lorawan, but the current BS-EN13201 specification only considers varying light levels on main roads (according to traffic rate) & not residential areas. Floodlight football pitches are one of the "artificial light nuisances" under the Environment Protection Act 1990:- https://www.gov.uk/guidance/artificial-light-nuisances-how-councils-deal-with-complaints (Sadly streetlights are exempt) Thanks @Ships and Stars for this thread! Ivor PS: BTW Our local council gets far more complaints about noise & trees than they do nuisance lighting...
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