Nexstar Tracking mount works well, Tej. Great timelapse! Sounds like you had a lovely evening.
Oops! Sorry about that. I'm unable to edit my post so have attached the pdf article instead... Hope this works. A well telescope doesn't appeal to me...
.. I couldn't leave it at that article... ! Here is another interesting read: It's a pdf that you can download that describes Hooke's experiments at ...
Sorry for the slow reply, Alex. I'd suggest that you bring your telescope to one of our monthly Blackheath observing sessions where it will be easier...
Hi Thomas - Welcome to the Flamsteed! Hope that your twins enjoyed Venus viewing with the Great Equatorial Telescope last summer. Thanks for your not...
Why the fascination with getting a super wide angle lens? I’m not immensely keen on the appearance of super-wide photos, to be honest... I’m ...
.. Upon closer inspection of the equalized photos... This is ISO 800: 24mm 10s f/5 ISO 800 by Christina Chester, on Flickr ...
You got image 3 and 2 out of image 1??? Wow!!! I second that! Your Rosette Nebula image is amazing, Rupert. It really does depict what can be...
Thanks very much for the detailed reply, Rupert. Your advice (and expertise) is immensely helpful. Perhaps this Sigma lens is a lemon… The re...
How much coma is too much coma? I've been outside playing with a Sigma 20mm F/1.4 ART lens tonight... I just wanted to test it for aberration...