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Showing content with the highest reputation on 19/05/13 in all areas

  1. Well, I managed to get out and capture another 2 OIII panes this week, so here's an update - To recap, the Ha is 12 panes (51.5hrs in 900s subs) and the 3 OIII panes so far has added a further 14 hours (1200s subs). I must say, it's a LOT simpler framing using the Ha panes to plate solve against I'm personally not a great fan of HOO images (well, that is I'm not able to process them very well!), but I sometimes find that using Noel's "synthetic green channel" action sometimes produces a semi-pleasing result on some nebula, so just to ensure that things are still heading the right way I thoug
    14 points
  2. Hi, Still from last weekend. M101 LRGB (160:90:90:90) Version 1 processed with my laptop which have a bad color renditioin the native screen! Tak FS102NSV @ f/8 + QSI532WS-M1 @ -20ºC Cheers, paulo
    7 points
  3. Hello everyone Here is a serie of picture taken last Monday with a Celestron C14, a Powermate x2.5 barlow and a Basler Ace 1300 mono camera. I hope you'll like them B&W base image, best of the serie A simple animation, back to back of 15 frames : Link And some work done by fellow amateur astronomers on my french forum Colorized LRGB by Ch. Perrier, mixing his color channels with my image as L layer An animation at 200% size by Valère Leroy : Link A polar projection with WinJupos by Jean-Jacques Poupeau : Link Comments and critics welcomed Clear Skies everyone !
    5 points
  4. Not quite up to NASA's standards (or most images posted on here), but this was on my todo list. Again this was taken on holiday in Fuerteventura. As I said before, I should have spent more time on just one or two targets instead of trying to cram in too many, lesson learned and hopefully if there is a next time I will heed my own advice. It was taken under non-ideal conditions with both LP and wind. Needs a lot more data but still a million times better than my previous effort. Modified Canon 1100D with Canon 500mm f/4 L IS lens @ ISO1600. AstroTrac TT320 Mount. 25x 60 second lights 20x Darks
    5 points
  5. So I have always been into imaging, rather than observing. Planetary views, even of Saturn, have always been so-so, never quite been able to make out much detail. And I only have the eyepieces that came with the scopes I have, which add up to; 1 x 32mm Axiom 1 x Hyperion Zoom (bought for doing planetary videos with) 1x set of el cheapo plossls 2x and 3x Tal Barlows. Well I have jigged my observatory around today, raised the pier, and needed to realign the mount, so for quickness I did it with an eyepiece. At the IAS on friday I bought my first decent barlow, a 2x 2" powermate. As Saturn was i
    5 points
  6. Hi folks, after a long time of abstinence a result. Did I say that I hate clouds and rain? This is a nice group of galaxies in constellation Virgo. Each galaxy in it is somewhat distorted by the gravitational pull of the neighbours. Distance 65 Mio. lys. Captured from my balcony with 10" f/4 newtonian and MoravianG2-8300FW, LRGB, 9x600s for every channel. 66%: http://www.starrymet..._LRGB66Perc.jpg 100% crop: http://www.starrymet...00Perc_crop.jpg Cheers Werner
    4 points
  7. Tricky target from my obsy, by the time it gets dark, it was only an hour until meridian flip, and after the flip it's only an hour and a half until it goes behind next doors giant Leylandii. So although I have a fair amount of data (72 x 500 seconds for LUM) it was gathered over too many nights and conditions, and processing it has been the Devil's own work, the flats were a nightmare. This might actually be the first time I have properly attempted and finished an LRGB image I think, even though I added a bit of data from my new OSC 460ex, although that was mainly to even out the background.
    4 points
  8. Not completely happy with this yet but will have to do for now. Ha (6x10min) blended into R. Colours only 30mins each.
    3 points
  9. Seeing as the weather is a complete mess had another play with an IR Colour image from the 2nd. Quite pleased with the result considering it was taken at 22 degrees. QHY Colour & mono Cams + 5x powermate & Auto Dob.
    3 points
  10. I received my new mount friday and was eager to try it out. the weather was against me and I didnt expect to be able to image any time soon. Much to my amazement, y'day evening the skies were clear... So I rushed out just to discover that my usb repeater cable went dead... after some cable stretching an mcguyver inginuity I could finally start (was after midnight already..) I decided to give the Veil Nebula a go.. My Heq5 did its job, not even balanced or tuned..I just gave it a go.. I shot 12 x300s with a neodymium filter and 8 x300s with a Castel UHC at ISO800. I must say, for a run-and-go s
    3 points
  11. I don't want to put a downer on things or derail this thread but personally I feel one should only spend only what one can afford. A credit card does not mean free money. You have to pay back what you spend and in general, you will be charged interest on any outstanding balance. For numerous normative reasons, I feel we ought to adapt ourselves to sacrifice, along with the mental and emotional effort required to get to the point where we can buy something debt-free, rather than the aggravation of dealing with debt and financial stress. A little put by each month and you're a freer man than the
    3 points
  12. Ay, to what degree I have no idea, but I have the suspicion that SGL and Cloudy Nights can help make or break a given range of eyepieces or some other astro related gear. The BGO's disappeared in what I understand was a 'metaphysical-act' or 'act-of-god' (tsunami in Japan) but their popularity and price hike on the secondhand market remains due to favourable reviews at these two forums. On the other hand, it could well be possible that the not entirely positive reviews about certain features of the Radian range (more noticeable at CN) was a catalyst for their gradual demise. If this is so, it
    3 points
  13. putting something back here. This observatory will be opened up to local schools doing GCSE astronomy totally free of charge....the way education should be....
    3 points
  14. Every now and again I do a full collimation (other than focuser alignment and vane centralisation as these never really change once set) of my scopes and was reminded of something that many people may not appreciate. The faster the scope (i.e. f5 is faster than f8) for the same primary size or the larger the primary, the larger the secondary mirror and the more unlikely this is to be seen fully down a standard Cheshire eyepiece (technically a cheshire - sight tube combination). This makes the first main step of collimation quite difficult and is one reason a collimation cap is often recommende
    2 points
  15. Hi, This is my attempt at the Owl nebula and also the first picture taken with cooled CCD camera for me. My Canon EOS500D has now retired. The image is photographed from Uppsala in Sweden, date 2013-03-13. Exposures L23x10min, R9x10min, G9x10min, B7x10min. Camera SBIG STF-8300M, cooled to -30 ° C. Telescope, Skywatcher 190MN on NEQ6-mount. Guide camera-QHY5M. Stacked in Maxim DL and then processed in Adobe Ps Cs5. Weather conditions good, around -15°C. Enjoy! Full 100% wiew: http://www.astronet....2550&mode=large Close up wiew, cropped: http://www.astronet....2549&mode=large
    2 points
  16. Taken with skywatcher ED80 and Atik383l+ mono with Ha filter. 10x360s with darks and flats. Processed with pixinsight. Quite pleased with the result as the seeing conditions were very poor but couldn't pass up the chance for another go with my new CCD.
    2 points
  17. Some nice conjunctions for the next week. They will be a bit of a challenge, but good luck
    2 points
  18. I had a fabulous day out the international astronomy show yesterday and it was a privilege to meet the great Steve Ward and David the bears fan in person I tried my best to convince Steve that he really had to own a Solarscope but he was tough and totally resisted the urge. Come on Steve, you know you want one Any way, the weather men changed their minds last night and forecast a glorious sunny day today so I jumped out of bed very early to you have guessed it, totally grey skies! Finally around mid morning a mere hint of sunshine broke through, a bit, enough to get just 2 images with the So
    2 points
  19. Hi Guys, it's been a long time since I posted anything here on account of the so few clear nights. Last night was probably the clearest sky I've had in ages and no Moon glare to compete with. In my location, Saturn's low elevation in the UK makes it suffer badly from the warm air rising from surrounding neighbours rooftops and smokestacks. Given the lighter evenings, this is probably as good as it's likely to get on this apparition. I've done some experimentation with the ASI 120MM camera and the latest (Beta) 2.3 version of FireCapture testing out the 16 bit option. The RGB captures were 120
    2 points
  20. After a beautifully sunny day the thinnest of cloud started to drift in just after sunset, right at that time when it's very hard to see if it's there or not. I got out and set up with a clear view of the Moon, but within minutes it had gone hazy so I refilled my wine glass and waited for it to clear before kicking off APT. Even then Saturn, Spica and Arcturus where popping in and out of view to my left as cloud drifted over so I wasn't entirely hopeful of a good result. As it happens, I don't think it's turned out too badly. 120 frames of 1/200th @ ISO200, 450D & 127 Mak, preprocessed
    2 points
  21. Loads of sound and really great advice here, Ian and I cannot really add much to the topic. I have noticed that when it comes to planetary viewing slight changes in the focal length of eyepieces makes a difference to what can be tweaked from the given object. In terms of general useful magnification, I have a little collection of EPs which run the following parameters: f/10: 200x, 166x, 142x, 133x, 111x, 100x, 83x. f/5: 250x, 208x, 178x, 166x, 138x, 125x, 104x. For Lunar work, all these magnifications offer up something to be amazed by. The low power help frame the Moon, the mid-range frames c
    2 points
  22. Thanks for all your comments. I managed to get three very different pics out of the same data. I think I need to get my processing a bit more consistent!! Jake, I think next should be a giant fan to blow all these clouds away!!! Then a smaller galaxy maybe.
    2 points
  23. Not so. Once you stretch the image (which PI facilitates very cleverly) you change the relative brightnesses and any photometric value goes out of the window. Some would say that this removes all scientific value. I'm going to disagree and give an example. The nature of the 'bridge of light' between M51 and its small companion was, at one time, much debated. I feel that this image provides compelling evidence, albeit a bit late, that M51 is a foreground object since you can see the blue of the tidal arm extending beyond the companion. PI is not more scientific than Photoshop. It is just more
    2 points
  24. The NEQ6 has dual saddle so both will fit. Vixen dovetail is narrower but thicker. They are usually used in lighter set up Losmandy/CGE dovetail is wider but thinner. They are usually used in heavier set up. Generally, Losmandy type saddle have longer contact than Vixen type saddle, so they are more stable.
    2 points
  25. hi had a rough night yesterday... ...nothing worked as it used to work... but here some tiny smudges from the coma cluster 15x300sec iso800 (should have been 40...but yeah...phd hang up, some guiding trbls, my cat, and a lot of wind) but what the heck... i hope you enjoy it
    2 points
  26. If you are using masks, you are using layers although you may not think of it that way.
    2 points
  27. You probably posted that with tongue-in-cheek but someone did accuse us of profiteering last year. Our defense is posted here HTH, Steve
    2 points
  28. Sounds like a good excuse to upgrade to me
    2 points
  29. Sound advice! what I would do is each night... Pop out the back garden... If its clear, use whatever you have now... If its cloudy... Put a fiver in a jar... Before you know it you'll be up to Takahashi money
    2 points
  30. If you cleaned it out with club soda you could call it the Spritzer Space Telescope! Hope it has a happy ending hit you.
    2 points
  31. A couple of comments.... You can start you journey into spectroscopy with a simple Star Analyser grating (or Rainbow Optics) for around 100gbp. Combine this with your existing scope and camera and you'll obtain good low resolution spectra of various objects - stars, variable stars, Be stars, novae, nebulae etc. Processing spectra images is no different (well similar!) to processing AP images - the fun part comes when you start to calibrate and prepare a profile for comparison and analysis. There are many free software programs to help you; VSpec, ISIS, SPCaude'ACE, and others. The commercial o
    2 points
  32. So all your moonmaps now need updating lol
    2 points
  33. Do it again, I wasn't looking!
    2 points
  34. M11 is a real treat indeed- if you can get to a dark sky site then you'll find it sits against a lovely backdrop of the Milky Way. Very nice at low power.
    2 points
  35. Taken with DMK21 & C9.25 Approx 900 frames from 1800 Stacked in Autostakkert & lightly processed in Photoshop Elements Don conv_Moon_0014 13-04-18 22-39-07_g3_b3_ap74.tif conv_Moon_0012 13-04-18 22-35-15_g3_b3_ap56.tif
    1 point
  36. Some fresh H-alpha solar images from today. Coronado PST, IDS UI-1240LE-NIR camera, GSO Barlow lens on the nosepiece (~1,4x). Clouds were rolling so imaging was possible only in between them Single Stack: Double Stack: It's hard to avoid darker edged with double stack. I had bit better settings on some other AVIs but those got broken when saving...
    1 point
  37. I presume you have downloaded and installed Stellarium. It's free and will show the planets positions for years to come.
    1 point
  38. Having now got a good Radian (after a false start !) I'm rather impressed with it. It's a 4mm and sits nicely between my Pentax 5 and 3.3mm XW's I think the sudden inflation in BGO pricing was perhaps inevitable once news of their demise got out. No excuse for it to continue though as the Astro Hutech orthos are the same One eyepiece that this forum did make a success is the BST Explorer (or whatever they are called now). Robin's positive report on his website plus the feedback from owners on here have probably bought Alan at Skies the Limit a nice holiday on the proceeds - and deservedly so
    1 point
  39. I think the demised of Radian started when some guy reviewed the Pentax XF, found the Pentax performed better and cost much less. Radian also faces serious competition from JOC's 82deg such as ES82 and Meade S5K UWA. BGO and other orthos were always a niche product, even in the astro market. They were discontinued without an alternative, hence the price hike.
    1 point
  40. Basically no, so long as it is a mirror, all they do is make it easier to look into the scope. If you have a prism diagonal then they can make the image erect but astro scopes are not intended to work with a lump of glass in the path so you will get additional CA from the prism. We cannot produce a perfect reflector or prism so with either type of prism it will reduce the amount of light that gets into the eye, even a small bit with a good mirror, also the mirror surface and the glass body add some scattering to the optics.
    1 point
  41. UV filters block UV light as you would expect. Film is very sensitive to UV light so it was sometimes useful to block UV. Digital sensors do not have the same problem. A 1A filter provides a slightly warm cast to film but again, has no useful effect on digital cameras. Marumi is actually considered quite a good make but if you fit them to the lens the only benefit you will have is that it provides some protection for the front element. You have to trade this off against the risk of extra flare and ghost images caused by having an extra piece of glass at the front of the lens. I dont do AP but
    1 point
  42. I made this sketch yesterday through my 16" truss Dob, and although my sketches of galaxies mostly take only 15-30 minutes to complete, this one kept me busy for an hour!. The gradual dimming of the soft edges into outer space was relatively easy, but man, that dark lane! I rendered the bean shape with an eraser, but somehow I ,just could not get it right. But finally, after a lot of tries, it came out pretty nice. Not perfect, but I thought it would be wise to leave it as it was . This is the final sketch (140x): http://www.roelblog.nl/2013/05/schets-messier-64-the-black-eye-galaxy/ (click o
    1 point
  43. 1 point
  44. If you don't have or can't find a Credit Card with interest free credit for 6 months or more, the use any Credit Card to purchase what you want then transfer the amount to another card offering 1 year or more zero interest on balance transfers this way you get you bits early and pay not interest, i purchased my Mount and Scope at the same time using the balance transfer method, just make sure you can afford the repayments over the free interest period and stick to it don't get sucked in to buying any thing else, clear the balance.....
    1 point
  45. one of favourites too, like you say its like a loose glob or a tight open cluster . ive not visited it this year , i managed a sketch of it last may ( i say sketch in the loosest possible terms )
    1 point
  46. I radio detected that meteorite that impacted moon from my meteor space radar receiving station
    1 point
  47. Thanks Aenima, loads of good advice there and will be taking all of it inn, i think i may of ment basic EQ5 mount but after your advice will be saving for the extra benifits of HEQ5....seems well worth it! Got my xbox webcam through the post the other day, modified it (hopefully) took me ages to find a 1.25" peice of piping to add to it (as i dont have to many old barlows to use) but poundland and a hard plastic skipping rope handle seemed to do the trick just right, was not quite 1.25" to be far but with a few layers of micro-pore tape added fitted into the focal shaft just nicely!
    1 point
  48. I think we're missing the point here... Essex is Essex! Its the Essex forum and we're all fellow Essex boys (no girls yet ) ... Anyway... Its easy to be an astronomer up at the dark end of Essex, it takes real commitment to observe at the light pollution capital of Essex such as Brentwood / Basildon / loughton :D:D:D
    1 point
  49. Moffer I'm certainly not offended , it was a road safety campaign and nowt more . And yeah make sure your scope is secure every trip, they ain't cheap
    1 point
  50. Don't do long exposures, IMHO. Id be tempted to do the following: Find a well lit, blank, light coloured wall. Take two shots, defocussed to start, with the aperture wide open, the fully stopped down, properly exposed I.e shoot in aperture priority mode. Repeat above but in focus. You could use a blue patch of sky as well. Its the same technique I use to check for dust bunnies so I assume it would help show up lens defects, but I could be wrong.
    1 point
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