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I'm having a bit of a clearout to make way for a new project. For sale here are a couple of items that have seen very litle use:
1) Celestron Omni CG-4 GEM Mount + Tripod - £125 *** SOLD ***
This is in generally very good condition. There are a few marks, and scuffs consistent with normal use. There are also a couple of minor (small) patches of surface rust on a few of the bolts and steel legs. It has seen very litle use, and has been in storage for the past few years so it is time to find it a good home. The small rubber tips that go on the very end of the feet have perished, so these won't be included.
It includes tubular steel tripod, 2 counterweights, built in polar scope, built in bubble level and slow motion controls.
Due to size and weight, collection would be preferred from the RG27 area. If you are reasonably local, I would also consider delivering.
Price: £125, but I am open to offers. Payment can be made via Bank Transfer (preferred), Paypal or cash on collection
2) ***SOLD*** Celestron Omni XLT 127mm Telescope ***SOLD ***
Again this is in very good condition, and has been in storage for the past few years and has had very little overall use. A few marks on the dovetail as is to be expected.
It includes a small finderscope, diagonal and a 25mm eyepiece
Can be collected from the RG27 area, I could deliver if you are reasonably local, or can be posted for an additional £8.
Price: £110, but am open to offers. Payment can be made via Bank Transfer (preferred), Paypal or cash on collection *** NOW SOLD ***
Any questions please do let me know.
Hi! I've recently acquired a new Astromodified Canon rebel XT and I've tried to take pictures of nebulas using it but I've noticed that there are these weird black artifacts that keep appearing in my images. Would like to know if anyone has experienced this before? Or are these dirt/dust specs on the camera, filter, and telescope glass? I've attached some of my edited and raw pictures for your reference. The black artifacts can already be seen in the raw image of the horsehead nebula and after stacking I think it got amplified. Anyway, advance thanks and I hope everyone's doing well.
I popped this topic on CN too but noone seems to know anything.
I came by an old Celestron Ultima 8 pre-PEC. I really like the scope and the mount it may be that I have read too much of Uncle Rod's and other's praise that I feel this scope has some intangible personality and charm.
Circuitry in the base seems to work fine even though the batteries don't hold charge but drive the Ra axis . I have 2 replacement on its way to me.
Now my issue: It didn't come with a hand controller. I know it is not needed for tracking, and I don't have a Dec motor but I find it would be useful for centering in RA and D.A.R.V. method drift alignment.
I was on the verge of making a crude controller out of veroboard and 4 momentary switches that I thought to be correct from the info on various sites, but then I came across an Ultima 8 project that clearly showed the hand controller for my scope.
The pic attached is the one.
I am looking for help on how the dial and buttons are wired in and/or photos of the innards of the hand controller or if anyone knows what else is inside the handbox.
The sources I was going on so far is a combination of the following 3 links:
These of course don't include drive rate rotary switch in the middle and if I could I would really like to to restore the full ability of this mount without spending too much on electronics. Plus I don't want to spend time and effort on wiring something that doesn't work.
Oh and lastly I have no background or experience in electronics just own a soldering station and a whole lot of determination.
Thanks in advance
I moved from color (Canon) DSLR camera's to more advanced ZWO black and white camera's with color filters. Now I have to handle gain and offset instead of ISO. In theory I think I understand very well what it's about, and took notice of the literature. In practice at the telescope I have to rely on trial and error with test exposures. Can someone point a (reference to a) cookbook-like procedure to me, which lead to the optimal setting of gain and offset?
Johan, Netherlands. [C14/Hyperstar, with a ZWO-183, and with a lot of light pollution.]
Managed to get this Telescope as my first (second-hand for £40, hardly used). Just wondering best objects to aim to see (I got a cheap moon filter which is all I have really had a chance to spot in the night sky so far).
Hoping as the hobby goes to invest in a more expensive one (any thoughts on next step up also welcome).
I have only had a few goes with it so far and found the Azimuth mount to be easy to use, but there is a metal rod which you can turn to slightly alter (don't think this is moving across the equatorial) however you can only turn it so far before the thread at the top falls out (is that normal?).
Any other random tips also welcome!