Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Search the Community

Showing results for tags 'polarscope'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • StarGaZine
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • IKI Observatory
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • EEVA (Electronically Enhanced Visual Astronomy)
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum


  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Dorset Stargazers's Events


There are no results to display.

There are no results to display.

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start





Website URL







Found 10 results

  1. When I look through my polarscope and rotate the RA arm, the cross hairs stay in the same place but the image itself moves. Is this a problem? I have tightened everything. Can you explain why the image moves? Is there another adjustment I need to do? Thank you, Gerard
  2. The standard Polarscope Reticle with the HEQ5, at least the one in mine, is a simple circle so using "Polarfinder" pictures is a matter of guessing its position. Other types of reticle seem to exist in which there are 12 or 24 graduations around the circle. Does anyone know of a source of such reticles for the standard Polarscope or a replacement Polarscope assembly with such a reticle? David
  3. I've just recently flashed to the new EQ 3.32 handset firmware. However, there are still a few things i'm still unsure of - big shock there When I set-up each time - i cant have a permanent fixture unfortunately - I often get confused as to how exactly I should go about aligning the mount. I have heard people say to set the lat for my area (ie 52) , and occasionally its been referred to as a seperate step to getting polaris in the polarscope. This is likely my mistake, but, to my way of thinking, wouldn't getting polaris in the crosshairs of the pol-scope do the same thing as setting my lattitude correctly? The goal being in both cases to get accurately polar-aligned.? Which brings me to the other query. After levelling mount and aiming 'N' leg North, then roughly sighting polaris in the P/scope - how would I adjust things to get polaris at the right 'hour' in the reticule? So far I use a combination of adjusting the lat/az bolts and nudging the actual tripod a bit by grabbing the rear two legs while looking through p/scope. This seems a tad sloppy to me, as the two different ways of adjusting the pole star's position in the reticule might leave room for error, or rather more error than necessary. Ive not yet tried the new firmware - could anyone be nice and explain the steps so an idiot - thats me btw - can follow them? Skywatcher actually have quite a good instruction manual for this update on their site, highly recommended, but after a few reads I still need a little clarification. Regards Aenima
  4. Hi everyone, Over winter I purchased an EQ6 non GOTO mount. As it was dry today, I thought that I would have a go aligning the polar scope within the mount. It looks so easy on the eBay video's! On the positive side I found that the cross-hairs kept steady on a distant television aerial when I rotated the Dec axis through 180 deg. What I didn't expect to find was that the TV aerial itself swung through an arc when I rotated the dec axis! I took a not very good video of this rotation using my mobile, which happened to be to hand but I think it is sufficient to see what happens. The video is below (hopefully). First what is happening here - anyone had this problem? Secondly, I took a photograph of the adjustments available to me near the polarscope. Which fasteners do I adjust? (image attached) Any help would be greatly appreciated, Errol Video of rotation problems
  5. Ok, some of you know that I have an AstroTrac (hereto referred to as AT) which I plan to use as a more portable, easier to set up, imaging rig. What you might not know is that, whilst the AT is a superb piece of engineering, like many other astro items on the market, there is always room for fine tuning. With the AT this is particularly true of the polarscope alignment, or collimation. This is something which I am aiming to undertake over the next week or so and thought it might benefit the members of SGL if this process were documented. Firstly, Id like to thank StuartJPP who intially brought the need for collimation to my attention in this thread. For further reading I would highly recommend this: Rotating Polar Scope Arm Messes Up Alignment - Yahoo Discussion and this: Fred Miranda Polar Scope Collimation PDF So how do you begin to collimate the polar scope? The answer is two fold. The first step is to ensure that the polar scope is collimated within the holder i.e. about its own axis. The second step is to ensure that the holder is centred about the AT 'polar' axis. Step One - Polarscope Reticule Centring The initial step is to ensure that the polar scope is centred about its own axis. To do this you need to first set up your AT and aim the polarscope on a distant object such as a pylon, telegraph pole or any other distant, stationary object Once you have chosen your object align your polar scope so that the centre (the intersection of all markings) is aligned to the top, or other definable point, of your object. Once aligned you can rotate your polarscope through 360 degrees. A correctly collimated or centred polar scope will keep its place when rotated. If your polar scope is badly collimated you will see the centre move around and off your definable point as you rotate. I chose a distant radio mast with a conveniently placed light ontop. The following set of photos show how the light is covered, but then emerges as I rotate the polar scope around through 360 degrees: This clearly shows that the polar scope is in need of collimation. Here is where the fun begins! To collimate the scope you need to adjust the 3no grub screws that are located around the barrel near where the illuminator sits: To make this easier, the Fred Miranda paper suggest replacing these with 3mm thumbscrews. I have currently ordered some thumbscrews from here: Kustom PCs - Black Metric Thumbscrews You can also order Thumbscrews from 365 Astronomy, they are labelled eyepiece fixings. Once they arrive I can see if they are long enough. And here is where the story, temporarily ends........
  6. I own a polarscope from FLO for a couple of months now, however I have never been able to get a correct polar alignment. When I screw in the polarscope in the mount completely then the 3 angle is at the top (see picture). However with this polaris keeps moving out of the circle when I polar align it. (Polar alignment seems not to work) When I loosen it I can get the reticule to 0, however the polarscope is very loosely in the mount. How to best get the polarscope correctly into the mount and get an accurate polar alignment.
  7. Hi all, I was just watching a video on Youtube from astronomy shed about propery centering the reticle in the polarscope. So I thought I'd give it a go. BAD idea! I ended up at one point with the grub screws stuck inside the mount and now it's way off center!. I've got the screws out now and I'm trying to center it but I'm getting nowhere. Are there any tips anyone could give me on sorting this out? Cheers Stuart If this thread isn't in the right topic I apologise (there isn't a 'OH NO, WHAT HAVE I JUST DONE TOPIC').
  8. Hey guys, After months of clouds and rains finally they are parting and clear skies can be seen. Now I am hoping you guys can assist me, i am after a illuminated polar scope for a CGEM mount, so far have only found polar scopes without illumination which doesn't help much (still makes it difficult when aligning). Anyone got any advice or products they can recommend?
  9. Unlike many I was fortunate enough to get an hour or so of crystal clear skies last night. Up until now I have always roughly plonked my EQ3-2 due North and had fun with some observing. Last night however was my opportunity to try my new HEQ5 (birthday present) and I thought I would set-up properly for the first time. Having been given some great advice on Polar alignment in another topic (I started) I was quite confident this would not be too tricky for me, I was very wrong. I spent the first 20 mins looking at the counterweight rod, and again nothing as the dec axis was not rotated to look through. I was just too excited and forgot everything I had read through these cloudy evenings about setting up. Anyway I could finally see stars after about 30mins but too many to pick Polaris. I think I was in the general direction but I could not make out which one was him. Should Polaris be really obvious to me, like way brighter? Also it seemed that I had to tip the altitude back almost as high as it could point, does this seem right? I was basically sitting on the cold wet floor squinting up through the polarscope at maybe 10/15 stars with no clue what was what. Deflated I resorted to manually moving the scope for 5 mins before the clouds rolled in, the night a failure.
  10. Hi all, This evening I wanted to have a go (again) at trying to figure out if my polar scope in the HEQ5 is aligned with the RA axis. So I tried first to set it up on my balcony and view a far away object (this in sunlight). I did turn the dec axis to open up the scope sights. I did not see ANYTHING. only darkness..... I even tried pointing it at the sun, and that barely shone through (did NOT put my eye behind it). So, tried putting it inside, and use a flashlight on top of a cupboard at the other end of the room. Strangely, that (also only barely) came through, but in a really weird way: it only shows on the left side of the "viewing circle"... when I turn the mount to move the light toward the middle crosshairs of the scope, the light disappears, as though it went behind an obstacle... It looks as though the polar scope is WAY off alignment, that far that the tube is obscuring part of the incoming light.... I am not touching the adjustment screws on the polar scope at the moment... First I need to hear some feedback as to what this could be... Has anybody seen this kind of problem? Any help would be greatly appreciated! Gerhard.
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.