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Lee_P

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Everything posted by Lee_P

  1. That's good, I was beginning to wonder exactly which camera *would* be suitable... Yes, very wise. The only really heavy lens I'd be using is the 70-200 2.8, which has its own foot and tripod attachment, so I guess that would attach to the mount rather than the camera. Assuming there's a simple way to do that. Canon does seem to be much better catered for than Nikon, astro-wise -- and the fact that I'll be mostly using Nikon Z lenses narrows my attachment options further. Actually, that's a question for anyone in the know: what would I need to attach a Nikon Z lens to a cam
  2. Carole's got me enthused about the lens route! The Samyang 135mm looks great (I spent hours looking through the epic forum thread), but if I could overcome my concerns about using my current lenses -- perhaps not by using particular ones that I might need for a shoot the following day -- then perhaps I could just use my existing collection, inc. 50mm f1.8 and 70-200 f2.8. With that in mind, two questions about lens set-ups, if I may: * Considering I'd like to use a cooled astrocam, lens, guidescope, red dot finder, ASiair to control it... what's the best way of physically coupling all tha
  3. Yes, that could be an option. Thanks for the suggestion. How do you deal with focussing the lens -- do you have that automated in any way?
  4. Thanks, that's really useful to know. Regarding the filter holder, they seem to be in-built into the flatteners; is the benefit of the separate filter holder that it allows easy switching? I expect I'd leave the filter in all the time, but maybe it wouldn't pan out that way.
  5. Thanks Ken, I realise that I wrote EQ5 whereas I actually have an HEQ5. I'll edit the original post. I bought the mount from SGL's very own Skipper Billy, and it's proved itself to be very reliable and steady as a rock with my previous set-up, which was heavier and had a longer focal-length that what I'm considering next. So it should be a-ok.
  6. Any thoughts from the SGL Hive Mind on my other questions? Would love to hear more opinions! Particularly keen to know informed opinions on the Optolong filters. Thanks!
  7. Thanks, that's a good idea and is something I'll consider!
  8. Hi SGL folks, I’m hoping to get some thoughts on a future imaging set-up. I’ve done astro imaging before, with an 80ED, ASI1600 mono plus filters, and an HEQ5. I recently sold most of the kit (but kept the HEQ5), as a new baby has left me precious little free time! I do miss the hobby though, and am contemplating a return – maybe this winter. I’d be imaging from my garden in the centre of Bristol (i.e. terrible light pollution). My goal is to be able to set everything up with a minimum of fuss (say 20 mins max), and get some decent data to play with over the course of a night. I like
  9. Thanks for the info -- those lens controllers in particular are the kinds of things I was imagining, and I had no idea they actually existed! Shame they're currently just for Canon. That's a fair idea, the reason I haven't just tried it yet is that I don't have a suitable camera to use. My inner-city skies rule out my regular camera. What I'll do is let these ideas swim around my head for a while, and then start a new thread about a whole imaging set-up that might fit the bill. Thanks everyone for the replies, you're all awesome
  10. Thanks, all good info! I've previously had an imaging rig -- telescope, mono CMOS, filters, etc. I sold all of that due to a lack of time for the hobby, and am tentatively pondering a return sometime in the future. I reckon I'd go down the cooled CMOS route, and a key question will be: telescope or camera lenses? I'm a photographer and have some nice Nikon lenses. But 'scopes like the WO 61mm seem like camera lenses designed for astrophotography, so may be a better choice. My old rig had an EAF, and I liked how that took care of focussing, and kept everything in focus all night.
  11. Thanks for the info, but what I'm specifically wondering is whether that focus changes over the course of a night's observing. Or, considering camera lenses are often wide-field compared to telescopes, does an image essentially stay in focus all night? If adjustment is needed, do you need to manually repeat the process you described every hour (for example) to maintain good focus? Or are there automated ways of doing it (such as vlaiv suggested). From your sig I see you use a Samyang lens, so I expect you've got first-hand experience in this!
  12. Thanks for the info, that's interesting. Presumably APT communicates with the lens via a cable connected to the DSLR camera? So this wouldn't work if using a dedicated astrocam?
  13. Hi, I've got a Sky-Watcher 9x50 guidescope and QHY5 mono available -- just heading out of the house now, but I'll post more details later if you like.
  14. I know that when imaging, getting the right focus is critical. If using a telescope, you can use electronic focusers (and perhaps software such a SGP) to regularly check and refocus if necessary. I'm wondering, how does this work if you're using camera lenses? Let's say you're doing an all-night imaging session. Do you need to manually check every hour or so to see if the focus has slipped? Or are camera lenses, often with their lower focal lengths, more forgiving when it comes to getting focus spot-on?
  15. Hi all, I'm sure this must exist somewhere on the forum, but I can't find it... Has anyone made a comparison between images obtained with an unmodded DSLR using an h-alpha filter, and mono cooled CCD with h-alpha filter? I'm sure the CCD will come out on top (lower noise, shorter exposure times etc.) but am curious to see like-for-like comparisons, if any exist. Thanks to anyone who can help with my curiosity!
  16. £300. 'Scope comes with diagonal, 28mm 2” eyepiece, and dovetail. Note: doesn’t come with a finder / guider or the heated tape shown in the pics, but ask if you're interested in those. Buyer to collect from central Bristol, or buyer can arrange for a courier. Comes in its original box. It's an earlier version of this: https://www.firstlightoptics.com/maksutov/skywatcher-skymax-150-pro.html Also included is an Astrozap Flexible Dew Shield for Skymax 150 (https://www.firstlightoptics.com/dew-prevention/astrozap-flexible-dew-shield.html)
  17. Thanks for the reply. I think you're right, but I don't have the "Edit" button next to "Quote" for the early posts in this thread. I'm probably missing something obvious!
  18. Update: most items sold, I'm withdrawing this ad to create a new one just for the Skymax 150. I don't have an option to edit the thread title to include "Withdrawn" -- does anyone know how I can do this?
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