Jump to content

740427863_Terminatorchallenge.jpg.2f4cb93182b2ce715fac5aa75b0503c8.jpg

bujin

New Members
  • Posts

    44
  • Joined

  • Last visited

Reputation

56 Excellent

Profile Information

  • Gender
    Male
  • Interests
    astronomy, touch rugby
  • Location
    North East Wales
  1. Thanks for all your responses. I'll triple check the data next time I set up. One of the first things I considered was that I had either the time zone wrong, or that it was using BST instead of GMT, as it did seem as if it was about an hour off the expected position. The handset tells me that I'm definitely in the right time zone, using the right time (i.e. GMT at the moment) and that my location is pretty close (I'm selecting Liverpool as a city rather than inputting the exact coordinates, but Liverpool is almost exactly due north of my location, so shouldn't result in that big a difference). But I'll definitely make a note of the handset settings next time I get a chance to set up just to confirm it all.
  2. Yeah, I initially thought that the location had reset itself, but I checked it and it's definitely set correctly. I'm 100% certain that the mount was aligned with Polaris, and about 99% sure that the camera was aligned with Polaris too (I wasn't using the scope, just the camera attached to the mount).
  3. Ok, apologies if the topic title is a bit cryptic - I couldn't think of a more descriptive one! I went out for an imaging session a few nights ago. I roughly aligned the mount towards Polaris, then tried an alignment. Now, this is something I've noticed over a couple of months, but it was only the last session where I tried my first use of Alignmaster that it really started to annoy me and lead me to seek some advice! When I select a star to align, the telescope slews, but ends up maybe 10-15 degrees off where it should be pointing. I've ensured that the time is correct, that I'm in the correct time zone and not using Daylight Saving. The date is correct, and the location is still set at the same as it always has been. As I say, in previous sessions, I've done the 2 star alignment and made the massive corrections to the position, then done a couple of calibration stars, and after that, it works fine. However, as I found to much frustration a few nights ago, Alignmaster won't correct if the error is more than 10 degrees out. Anyone got any advice for me? Is my mount knackered? It's a Celestron CG-5 GT mount, btw.
  4. I thought it was ok. Seemed a bit light on content, but I'm hoping that's because it was a series introduction. I'll give it a few more weeks to see if it picks up.
  5. bujin

    Space

    I think humans are too short sighted and stupid as a whole to conquer space. We'll all be extinct way before we get the chance to migrate to another world. Far too much infighting to be able to work together as a species, which is what would be needed in order for this to become a reality. Here's hoping that whatever comes along to replace us has better luck!
  6. From Friday night. 40x 30sec exposures, ISO800, Canon EOS1100D with Sigma 70-300mm lens (at 300mm), f/5.6. 11 darks, 20 flats, 20 bias. Stacked in DSS, processed in Photoshop. Not perfect by any means. I wanted to take at least double the number of exposures but the clouds came in to ruin that plan! But even so, I'm quite happy with the result. Far better than my previous attempts which were very short exposures on an alt-az mount: First attempt was taken in April and was 11x 4 second images at ISO6400, 200mm lens. This one was taken on 22nd November, again on Alt-Az mount with very short exposures, but a lot of them.
  7. I completed an astrophysics degree 15 years ago, but haven't really used it since then. If I had 6-12 hours per week free, I'd love to join in with this course. Unfortunately with the stress of work at the moment, I don't think I'd have the energy.
  8. Ouch! Me too! I can remember being excited about this event while doing my A Levels. Nearly 20 years. Where did the time go???
  9. Spent a bit of time in my back garden last night with my DSLR and 300mm lens attached to my CG5 mount. Double Cluster in Perseus. 26x 30 second exposures at ISO1600. 24x darks. M33 Triangulum Galaxy. 50x 30 second exposures at ISO1600. 24x darks. M31 Andromeda Galaxy. 62x 30 second exposures at ISO1600. 24x darks. All stacked using Deep Sky Stacker and processed using a combination of the Luminance tool in DSS and Photoshop to adjust the levels and curves and remove gradients. Not perfect, but I'm still learning. This was only my second attempt with the camera attached to the mount and I obviously hadn't aligned it quite as well as I could have as exposures longer than the 30 seconds were leading to some star trails. Not sure what I did wrong as when I first tried it last week, I was able to take 2 minute exposures before the star trails became evident...
  10. Hmmm... Ok, so the embedding of images didn't work, but at least you can click on the links in the post to view the images!
  11. My first real attempt at a DSO. <a href="http://www.flickr.com/photos/94624506@N05/9644441540/" title="Andromeda Galaxy (M31) by rokushakubo, on Flickr"><img src="http://farm4.staticflickr.com/3728/9644441540_dcb9fb803c_o.jpg" width="1024" height="682" alt="Andromeda Galaxy (M31)"></a> It's the centre of the Andromeda Galaxy, taken through my Celestron C6-SGT, prime focus on a Canon EOS 1100D with a 2x Barlow lens (because I hadn't figured out how to detach the Barlow at this point...). It was a stack of 23x 30 second exposures at ISO 3200, with 11x darks. I recently bought the equipment to attach my camera directly to my CG5 mount and it's made a huge difference! The Andromeda Galaxy has always been a favourite of mine and here's my first attempt using my 300mm camera lens: <a href="http://www.flickr.com/photos/94624506@N05/9718115757/" title="M31 Andromeda Galaxy by rokushakubo, on Flickr"><img src="http://farm8.staticflickr.com/7379/9718115757_47d24a4c00_o.jpg" width="1024" height="658" alt="M31 Andromeda Galaxy"></a> 11x 2min exposures, ISO400, 300mm, f/5.6, 5x darks. The following is a second attempt at processing the same files, this time doing most of the processing in DeepSkyStacker before tidying up in Photoshop: <a href="http://www.flickr.com/photos/94624506@N05/9718266517/" title="M31 Andromeda Galaxy by rokushakubo, on Flickr"><img src="http://farm6.staticflickr.com/5527/9718266517_228a494922_o.jpg" width="1024" height="682" alt="M31 Andromeda Galaxy"></a> This last image is my 2nd attempt at photographing M31, this time with 62x 30 second exposures at ISO1600, 300mm, f/5.6, with 24x darks. <a href="http://www.flickr.com/photos/94624506@N05/9752685462/" title="M31 Andromeda Galaxy by rokushakubo, on Flickr"><img src="http://farm8.staticflickr.com/7418/9752685462_bc6bba7c1d_o.jpg" width="1024" height="682" alt="M31 Andromeda Galaxy"></a>
  12. The thing I like about this pic is that it shows that even with the utterly epic achievement of the Apollo programme, humans have still travelled absolutely nowhere. No human being has been anywhere in the universe other than in between those two dots. And it took 3 days of travel to get from the big bright dot to the dimmer, smaller dot. As Douglas Adams wrote, "space is big"!
  13. Here's my first attempt at Saturn, taken on 25th May - my first use of my new telescope. Doesn't quite match up to some of the other Saturn photos I've seen around here, but I'm quite pleased with the result for a first attempt! (Celestron C6 SGT. Canon EOS 1100D with a 2x barlow lens. 42 second video clip processed in Registax 6)
  14. The pub quiz I used to frequent got us with the "how many planets are there in the solar system" one. I said 8. The "correct" answer was 9. No matter how much I argued that the "correct" answer is either 8 or "lots" (don't know the exact number, but you'd have to include all the minor planets), but could not actually be 9, they just wouldn't have it.
  15. Nice clear night in Wrexham last night. I finally got to put my new telescope to use to have a look at Saturn and the moon. Not too many DSOs visible in the area of the sky I could see - I pointed the telescope a the Black-Eye Galaxy, but I had to use averted vision to be able to see a very slightly brighter smudge against the background. DSOs will have to wait for another night!
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.