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By Hairy Gazer
I read a comment made on here the other day about the maximum magnification you can realistically use in UK skies (250x apparently). Therefore I was wondering what everyone else thinks this is, especially for you guys with 16" plus, apertures.
I'm still fairly new to this game (only being observing for about 7 months), and only have a 5" Newt at the moment (but am about to replace with a 10" Dob) so I don't get any higher than 159x (6.3 mm).
From the Malvern Ridge near Black Hill this morning. These are with 100-400L on Canon 7D. Had no luck closer in with the camera attached to an ETX90 tube. Too low / distorted for any Jupiter detail, but can just make out a couple of satellites here.
By Hairy Gazer
I currently have a Celestron Powerseeker 127 and am obviously finding it hard to see DSO's (Andromeda and M13 looks like a grey smudge).
I was looking at buying a 10inch Dob, but was wondering if Andromeda and M13 would still look like a grey smudge, but just a bigger one.
Also, I was worried about nudging a dob at 400x magnification, would the object just shoot out of view?
Any advise on this would be great.
Jupiter’s only going to be at an altitude of 8° & it’s bound to be cloudy but I’m definitely going to check.
With my 10” Dob, paracorr & canon I should be able to get the following fov. I’ll have a go with it on my EQ platform. Not the best imaging rig but worth a go 😀
If I use a powermate as well it’s as follows
Anyone else going to try for this and what with?
I've just received a 12" Lazy Susan bearing to see if I can ease the Azimuth movement on my 10" SkyWatcher Dob. Before I drilled any holes I thought I'd just put it in between the baseboards to see how it moved with the weight of the scope. Sure, it moves very freely and of course I'd have needed some kind of clutch to stop it flying around in the wind, but when it gets down to really fine movement, the cheep pressed steel bearing really isn't up to the job. I couldn't get the super-fine movement I had with the Teflon pads, it was just a wee bit too jerky. The Teflan pads are not as easy flowing but you get a load of control with Teflon if you apply some carefully applied muscle.
That's two dob mods that haven't worked for me so far, caster wheels and now the lazy susan bearing. Next upgrade will definitely be something simple like an eyepiece.