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Found 154 results

  1. Hello stargazers! after fixing the ED80 focuser tilt and FFR spacing issues (http://stargazerslounge.com/topic/249588-sw-ed80-reducer-elongated-stars-problem/) I have some trail (i think) in all exposures i take but it takes a lot of time to really build up and manifests in the images even in the center of the field! It becomes slightly visible in 10mins, worse in 20mins and in my opinion unusable in 30mins exposures. Gear used : Heq5 Pro Modified finderscope with QHY5 bolted firmly (although on 3 screw baader rings on single shoe on one of the rings not on a plate) on top of the ED80 Pulse guiding through ascom + pec trained and applied corrections while imaging One shot of 1800secs from last night Here is the plate solve of the image if that is of any help. Image Plate Solver script version 3.5.1 =============================================================================== Referentiation Matrix (Gnomonic projection = Matrix * Coords[x,y]): +0.00059136 -3.35323e-005 -0.948749 +3.35667e-005 +0.000591379 -0.805052 +0 +0 +1 Projection origin.. [1676.147757 1266.175055]pix -> [RA:+02 54 45.62 Dec:+60 26 33.75] Resolution ........ 2.132 arcsec/pix Rotation .......... 176.752 deg Focal ............. 522.35 mm Pixel size ........ 5.40 um Field of view ..... 1d 59' 7.6" x 1d 29' 59.1" Image center ...... RA: 02 54 45.583 Dec: +60 26 33.36 Image bounds: top-left ....... RA: 02 47 15.353 Dec: +59 37 27.51 top-right ...... RA: 03 02 57.738 Dec: +59 44 03.24 bottom-left .... RA: 02 46 12.014 Dec: +61 07 05.13 bottom-right ... RA: 03 02 38.669 Dec: +61 13 59.48 =============================================================================== 200% crop of the centre of the image shows the problem clearly. And here is PhDLabs last night's analysis log. Second run does not look much different than the first one (to my untrained eyes at least). The phd graph did look at its best (flatline like) What do ladies and gents think? bad polar alignment, backlash on gears, differential flexure? If anyone has suggestions of the nature of the problem might be, I would be grateful.
  2. Hello all As I hope to improve my astrophotography pictures with my current setup of a Skywatcher 150pds Canon 550d modified on EQ-6 all with guiding etc I'm thinking about either buying another telescope so I can do deeper field. What's a good upgrade from this scope where I can do deeper field and also improve on my astrophotography. I was thinking about a astro tech or maybe a Celestron 925 or silimar. I would love a Celestron EDGE but money won't stretch that far . Thanks for any advice. Gerry
  3. Weather, work and other factors has made it very hard for me to get as much out imaging, as I would've liked. Like 3 times since August. Weather has just been unforgiving, and quite a few times now, the clear windless nights have pretty much always hit on night where the moon has a huge influence. 80%+ illumination. One of these nights I tried imaging bodes nebula, and the moon set like an hour before sunrise. And you can see a huge difference between the images just before, and just after the moon-set. The ones before barely showing any detail. So, to cut to the chase, do you guys have any advice on what/how to image during these periods? The moon is an obvious choice, but that is not really something that feels rewarding for me currently. Do you guys not image at all during these nights, or can some open/globular cluster be of rewarding value? I could just go out and test for a few nights, but even that is hard with the weather.. I also use a Baader Neodymium filter, which seems to help a bit, just not quite enough
  4. Help! With the eclipse approaching, I am trying to get a full sun disk with my Celestron NexImage Solar System Imager through my Celestron NexStar 5se telescope. I am a teacher and can't take off what will be the first day of school. However, I can live stream the eclipse for the school. The problem is, my camera only gives me a view of (roughly) 25-ish % of the sun. I have a focal reducer (.5), though it is a cheap one. I tried using it with the camera, but I couldn't tell a difference. Do I need an eyepiece extension? Whatever I do, I need to do as cheap as possible--makes for a happier marriage. Incidentally, I am very much considering upgrading to the Meade Instruments 07545 LX f/6.3 Focal Reducer and Field Flattener, but I'm not sure if it will help if I'm not using it correctly (I'm not even sure a focal reducer will help at all to make the sun smaller). Technical stuff you might need to know: Camera: 1280x720 resolution, 3.0 micron square pixel size, sensor size is 3.86mm x 2.18 mm Telescope: Schmidt-Cassegrain, 125 mm aperture, apparent field of view 1 inch, focal length is 1250 mm I appreciate any help you can offer! I'm fairly tech savy, but pretty much every place I've visited speaks in a technical vernacular that's above my experience.
  5. Hi My recently acquired CCD imaging kit is all very lovely, except, I don't want to keep dismantling it in order for the scope to fit back in it's case and stored indoors between sessions. i thought I'd come up with the perfect solution, but *apparently* leaving it on the dining table isn't a viable option . So what do you guys do? Put up with disassembly, make/buy a bigger box, or something way more clever that I haven't yet considered? Justin
  6. Hi to all you members on SGL. I am a novice with 3 months experience with a SW200P dob, having started initially with a pair of Oregon 15 x 70 Bins on a tripod mount. I have referenced some good books and spent some time with Stellarium and I am encouraged by my new learnt ability to navigate the night sky with the 200p. I have connected my Nikon D600 (24mp full frame) DSLR to the scope and produced some satisfying photos of the moon, however I am interested in imaging some DSO's. ( I have caught the bug with no cure in sight!) I intend to get a tracking mount such as a SW HEQ5 Pro Synscan, but for now would like to purchase a wide field refractor and produce some wide field imaging with a basic mount, I understand that subs of around 30 sec can be produced with mediocre results initially until I get a better mount. Also it would be nice to have a grab and go scope which is more convenient than the big DOB. Also this would give me some images to experiment with the software such as DSS and Registax 6. So, I have been researching three achromatic telescopes, The Skywatcher ST80 and ST102 (both come with kit mounts ranging from AZ3 to EQ1 and the Bresser Messier AR-102/600 (which looks stylish and has the Hex focus) However, despite spending somewhere in the region of 4-5 hours so far researching for reviews on the BM102, nothing has been forthcoming>? I am aware of the issues of CA with these small tube Achromats, however the plan is to Purchase one of the three now, save for the HEQ5 mount, then at a later stage use the scope purchased now as a guide scope and but a better APO doublet or triplet scope for the main tube. So, having laid the table so to speak, which of the three would you advice and why please, I have been told by two companies stocking the BM102/600 that mechanically it is far superior to the two Skywatchers, but I am concerned that I cannot find ANY reviews on this OTA for its optical quality ?. I am aware that Synta make a few of these 80 and 100mm scopes for different suppliers but I am let to believe that the BM is a separate manufacturer. Any advice or better still hearing from someone who owns the Bresser Messier AR-102/600 would be amazing, so thank you for reading this long post and thank you in advance of your reply. Regards Graham Side note:- I have a VERY heavy duty pan tilt Manfrotto tripod which I previously used to support my Sinar 5x4 Large format bellows camera so its very steady and has a pan tilt head already fitted, I intend to mount the new scope on this as an AZ to begin with.
  7. I have a Celestron Nexstar 4sE 4 inch telescope, and a celestron neximage 5 with registax 6.1. Here are my first ever attempts at capturing Saturn: Terrible, I know. Are there any ways I can make this better? Any advice would be greatly appreciated. Thanks, Corkey
  8. Hi guys, I have a Canon D550 (T2i) which by pure fluke seems to be one of the few Canon cameras which is ideal for imaging planets using the video recording cropped 640 video size frames setting. I've read up on techniques etc but if really like a book as a reference to read up further on the subject but am finding most are either dedicated to deep space objects with a full guided set up or only have a small chapter and is more aimed towards the set up than any techniques etc. I have found the e-book A guide to DSLR planetary imaging by Jerry Lodriguss and it seems exactly what i want but it is only avaiable from the US and costs over £50 before VAT is calculated. Not paying that. The other consideration is Every photon counts which is highly rated on here but again I'm concerned on how much if the content will actually be focused on planetary imaging with a DSLR. Any input and opinion will be extremely welcome. Adaaam75 I have a Canon 550D with a Celestron 9.25SCT on an AVX mount (including adaptors!).
  9. Hello once again!! I'm ready to begin taking photos of the planets and deep sky and have a question or two. My telescope is a Ioptron 80mm. My camera is a Nikon D90. I just have the 18-55 lense, and the 55-200 lense, that came with it. My question is: do I need a t-ring, or a t-adapter to hook to camera up to the telescope? And are there any other accessories I need? Any advice you want to give is always greatly welcomed too! Thank You, Jon
  10. Hello all Im just started in imaging and I have to say I'm pleased with the first result BUT on closer inspection I see I have slightly oblong stars. So people know what I've got and done here it is http://www.astrobin.com/full/271950/0/?nc=user I have a baader coma corrector that I'm using set to 55mm from canon sensor and I have tried short exposures and I notice that it's still there in short exposures. Could it be collimation? It's the only thing I didn't do that evening. I would appreciate your input! Thanks Gerry
  11. Hey everyone, I searched the forum on this topic and was surprised to see that it wasn't being discussed! (at least not that I could find). I'll be using Skysafari pro to track its path, so I'm hopeful that I'll be able to find it... ... but then what's the best technique to image it? - Webcam? - DSRL in video mode? - Long exposure (guided)? What settings should we aim at? (ISO, exposure, etc) Anyone who hunted similar objects in the past who want to share their experience would be highly appreciated! Thanks Andrea
  12. Been meaning to post this for a while so here is my image from that night. So I set up the scope with a view to letting it cool a little longer than it had been already and looked at Jupiter Guide app on my iphone and saw that the GRS was just finishing transiting across the disc so I whacked the 2x TV powermate and ASI120MC on and messed about with focus quickly and fired off a total of 5 avis. Below is the best image. The avi was 3024 frames and put through PIPP. I then ran it through registax 5.1 which decided to stack 2475 frames then I did the wavelets in there too. I did a little Unsharp Mask in PS CS2 also. The seeing was a little better at times but still not great I dont think. The jetsream was above us still so I don't think that helped at all. 22.12.2013 2475 of 3000 withUS by Gattouomo161, on Flickr
  13. Hi there, I have a DMK21AU04.AS mono camera which I wanted to start using for planetary imaging & I was wondering which filter I would need. I already have a IR pass filter but I was wondered if a IR/UV cut filter would be better? Any advice is appreciated. Cheers, Jeff
  14. Aenima

    Comet Catalina

    From the album: The next step.

    Was really chuffed to catch this comet, especially with the two tails. This i believe is the 5th comet i've caught 'on film' as it were. Along with Panstarrs - ISON - Jacques, and Lovejoy (forgot the numerical names). Equipment: ED80 - / 350D -/ EQ6 -/ CLS clip
  15. Hey everyone! I’m after some pretty wide-field DSOs that can be captured with an unmodified DSLR without too much struggle (apart from the Orion Nebula.) I can push my exposures up to around 3 minutes with no major star trailing but that’s about as far as I can go. Also I’m in the Southern Hemisphere so don’t have the luxury of choosing between many relatively bright Messier objects. Your suggestions are much appreciated!
  16. Last night I got outside early to grab a chance to observe 3 major planets: Jupiter - could make out little in the twilight with the 127mm Mak. Saturn - seeing still poor - I imaged it but the result is not worth showing. Mars later on was better - its apparent size has shrunk, but this was the first time this year I have had a result with Syrtis Major facing the Earth. Syrtis Major, the bright area of Hellas and the south polar cap can all be made out in the image. Altitude of Mars was about 11deg - note that the southerly declination is decreasing as it moves North - quite significant if it is roof skimming as here. Imaged with C8 SE, ASI120MC, ADC, processed in Registax6.
  17. Hi all, It's been a while since I've posted a new topic unfortunately the weather has been horrible for the last month. I have saved up enough now for a new camera I had bought a cheap bridge type camera but wasn't that great and I'm looking to buy a DLSR and then hopefully a SA if I enjoy it. My max budget I think is no more than £200 I was hoping you could give me some recommendations for one that's slight beginner friendly but still good enough and also the best type of lenses to use? Many Thanks
  18. Has anyone used the Sky-Watcher Evostar 72ED DS-Pro for imaging yet? If so how did it perform, I only ask as I'm considering buying one in the near future (birthday present for myself) Thanks in advance. Tim
  19. hi all i have been a member on here for a while just not really posted much ,anyway I have been imaging now for a few months and thought I would share a few pictures of mine with you hope you all enjoy . all taken with Heq5 mount Skywatcher 130pds Nikon d3300 Zwo asi 120mc usb3 guide camera but also just purchased a canon 450d modified to take over from my Nikon any advice is greatly appreciated thanks pid hope you all like and any advice is greatly appreciated thanks pid
  20. Hey! I'm new here and I'm looking for advice to improve my planetary imaging. I've been using a Sky-Watcher 8" dobsonian telescope with a Celestron Neximage 5 Solar System Imager and RegiStaxs to process the videos I take. So far I've received decent images but they look faint and have little to no detail. Here are recent pictures of Jupiter and Mars I took. Any advice?
  21. HI All, I have nikon d3200 , is it good for astrophotography? i tried with 18-140mm lens but the shots are too much white not good..do i need to upgrade to d3400 or d5300 or d5600?
  22. My interest is in astrophotography and I am narrowing down my search of a mount between Celestron CGX-EQ (EQ only, 55 lb payload) and the Celestron CGEM II (AZ/EQ, 40 lb payload). Is there an advantage to having the AZ/EQ if my primary use is astrophotography? The CGEM II is only rated for 40 lbs and I thought the recommendation is to only go half that (20 lbs) for astrophotography. It would be pretty easy to exceed 20 lbs at some point in the future as my telescope collection grows. Any thoughts on the tradeoffs between these two fine mounts? Lloyd Linnell
  23. Currently when the clocks change around March/April time ive noticed my imaging and general viewing time takes a nose dive. This is mainly due to the lighter nights and not being able to stay up till 2am with going to work at 6. Would the use of a filter such as this help to extend that untill further into the year and also start earlier towards the end?
  24. Good morning everyone, This is my first 'official' picture of the moon. I took 14 images, but this is the one I brought into Photoshop to adjust the levels to produce this image. Took it last night around 11pm on my Bresser AR-102S with an Olympus E-500, Manual mode, 1/4000 exposure time, ISO 800. While I am the first to admit, I have no idea what I am doing, but I am having fun figuring it out and was fairly pleased with this result. Any comments, recommendations, advice greatly appreciated.
  25. So my last post about imaging the moon got alot of good feedback from you guys. But today after a down-pouring, overcast afternoon came a glorious clear evening with a beautiful red/purple sunset and an incredible Waxing Gibbous beaming onto the soaked pathways and grass in my garden. I set up my telescope on my little platform as usual along with my laptop, Neximage Burst camera and eyepieces. ( to align the Moon. ) I took 3 images of the Moon tonight. But out of the three my favorite was the image I took of the Copernicus crater. I know to a professional astrophotographer ( The majority of SL ) the image isn't the greatest, but to a novice astrophotographer like me I think I done a decent job. What do you think? Adam
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