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craigg

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About craigg

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  1. That's really impressive, particularly being in such light polluted skies. I've only tried HaLRGB once when I was using DSLR. I like the way it brings out the nebulae in the galaxies. It's easy to overcook the Ha in these and oversaturate them in post processing, but you've done a fine job!! Just for my own education, when you say you used drizzle to crop each galaxy individually, could you provide some more detail on what you did and why. I'm interested in the process, just not sure what this improves or how you do it?
  2. His Uncle? Lol. One day they'll get more sophisticated and harder to spot. As others, I've had no issues buying or selling on ABS or SGL. Just a bit of due diligence. Have a chat, see if they sound like they know what they're talking about. Avoid anything that sounds dodgy, if they offer to send their own courier, for example. There is a bit of a leap of faith when handing over the money, but you can do a lot to mitigate the risks. Stay safe everyone!
  3. Excellent advice added - like everyone else said, don't be afraid to ask questions. As others have said joining your local Astro club will also help, not only with setup but inspiration. My local club (Wessex Astro) have been excellent. Regarding the North alignment:- once you are setup outside, and you find an object you want to observe, the better aligned to Polaris you are the easier it will be to follow it as the Earth rotates. Think of it like this, if the RA axis is reasonably well aligned to Polaris, it is parallel to the Earth's rotational axis, meaning that to follow an object y
  4. Okay, Okay, deep breaths, stay calm!! Best thing to do is start at the beginning, don't try to get it all at once. YouTube is your best friend from herein. Start indoors to get the basics of assemby and balance: 1. Get your tripod roughly level (don't get too wound up about perfect) 2. add the EQ mount to the tripod, add weights and scope 3. balance it. Turn the Declination (Dec) axis so the scope is horizontal. With the dec clutch open, make sure it's rougly balanced (move the scope up or down to get it right). Be careful that the scope isn't so loose it falls off the
  5. Just ordered Dave Eagle's book too, looking forward to receiving it!!
  6. Yeah, me too!! Great image, I think I like the original version than the darker one too, but could easily change my mind. It seems the darker one loses some of the fainter nebulosity in the middle?
  7. Thanks Radek, however I think the Hitech Astro controller doesn't have a reliable offset - it doesn't have the position offset stored between sessions.
  8. No I haven't, but that's a good shout, I'll do that, thanks.
  9. Hello everyone, I recently bought a Raspberry Pi and StellarMate. Mostly working fine with my Atik camera, ZWO filter wheel, etc. However, I was hoping to get the autofocus working, but having some issues. I'm using a Hitech Astro DC focus with a Skywatcher Auto Focus motor. This seems to be working in terms of manual focus, but when I try to autofocus it seems to get it knickers in a twist. I have tried various INDI settings (suggestion here: https://indilib.org/forum/focusers-filter-wheels/2793-hitech-astro-dc-focuser-problem/26330.html) but what happens, even if I get it fairly cl
  10. Thanks for all the suggestions. PA could be an issue - I've had it on a SW pillar mount which has been polar aligned reasonably accurately. However, I have assumed it's remained aligned over a few weeks, maybe it's moved a bit. I'll check it next time I can see some stars, whenever that may be. I must admit, the field rotation you describe makes sense, but wouldn't I be seeing significant adjustments in the guiding chart if that was the case? I've temporarily bolted the ST80 rings directly to the side-by-side bar, so no clamp or dovetail bar. It's rock solid, so that should rule out
  11. Thanks for all the suggestions, that's given me a few more things to check. I may be misremembering the focal length, might be 400mm that I have set, for some reason I thought 480mm. That's what happens when you get old. Anyway, I'll go back to verify, maybe it's that simple. StuartJPP - I'll also strip down the dovetail, clam shells, etc and make sure everything as tight as can be. Doesn't hurt to double-check. Looking at the forecast, I'll have plenty of down-time to do this stuff before I get to test it out again.
  12. They're reasonably well balanced I think - I've got the two scopes on the dual mount bar positioned so the centre of balance is around the middle of the bar (i.e. perpendicular to the scopes) with both cameras attached and focus tubes around the same position as for imaging. I've also positioned the bar slightly off centre in the mount's puck as the WO is quite a bit heavier than the ST80, so it stays put when I move the Dec axis with the clutch released. One thing I was thinking was whether to slightly off balance the counter weights so that it's leaning slightly 'into' the gears, if you kn
  13. lin_guider seems to be quite good in this respect - in the video settings you just give it the aperture, focal length, sensor size and pixel size and it works the rest out for itself. I'll have another look though, when I have it running again, just in case I've missed something. Thanks for the help.
  14. Hi folks, I've just updated my setup to use a SW ST80 guide scope having previously used a finder/guider setup. Here's what I'm using: Mount: HEQ5Pro Imaging Scope: WO ZenithStar 71mm Guide Scope: SW ST80 (both above connected with an Ambermile side-by-side bar) Imaging Camera: Modified Canon EOS 600D Guide Camera: QHY5II-L-M I'm using lin_guider guiding software (essentially PHD for Linux) which was working just fine before using the 50mm finder and the same QHY guide camera. I've updated the guider settings to give it the 80mm aperture and 480mm foca
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