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Showing content with the highest reputation on 15/05/15 in all areas

  1. Being galaxy season I have hung up my Hyperstar and had a go with an Optec NextGEN WideField 0.5X reducer I bought some time ago for my C8. This works out at 0.75 arcseconds/pixel with my Atik 490EX, close to the limit of what I can guide on my HEQ-5 (and not helped by my dodgy seeing) but the results are a noticeably higher resolution than with Hyperstar. It took me a while to get the spacing near correct and it’s still perhaps a little off or maybe there’s a slight tilt in the focal plane, but the central part of the field is starting to look ok. The flats were not quite right; so a couple o
    12 points
  2. Ngc 3190 group L 23x15min-R 8x15- G 6x15-B 8x15 M63 ------------- L 28x15min-R 6x15-G 4x15-B 6x15 Ngc 4565------- L18x15min-R 6x15-G 4x15-B 6x15 All bix2 10"rc f8 mesu 200 mount Sbig STF8300m camera Thank you for watching )
    7 points
  3. After the rather hot and muggy day of yesterday, today brings with a more calming 30ºC+ and the seeing is excellent. This morning the Sun put on a spectacular display in both white light and H-alpha. What stood out are the very active regions snaking across the disc and the humongous prominences soaring and exploding all over the solar limb; surges, sprays and free floating fragments. The sketch was made using chalks but no matter what I do, they still seem to come out blurry when passed over to SGL. Howeve, I find that if you actually click on the image the sketch improves quite a bit. With a
    6 points
  4. I agree, James but over time the body does acclimatize and one literally feels the heat (or cold) less. Dave, the Sun put on a show of quite large hedgerows, surges and sprays this morning whilst the plage and sunspot regions across the sun are still quite bright and prominent. I've cut and pasted the sketch from the above photo so as to give a general indication of what is going on. Fingers crossed for you and Stu and Spaceboy tomorrow. Ghostdance, you probably know this already but Spain is the second most mountainous country in Europe. Quite literally, you could be skiing one morning and t
    6 points
  5. Plenty fish, just good to catch a glimpse of elusive clear sky ! Normally we come up in early October and get blasted by storms. Previous years have produced super auras and dark skies. Plenty room for the Dob Mob ! Nick.
    6 points
  6. Managed to capture sufficient panes for a mosaic. Bit soft in the lower right-hand side, but what with encroaching clouds I was expecting much worse. Visually, the two "horns" formed by the proms in the north looked a bit more symmetrical, but the difference in brightness breaks that symmetry in the image. Grey scale: Part inverted: Pseudo colour: Part inverted + pseudo colour:
    5 points
  7. Well clear skies arrived this morning but they were significantly shorter-lived than the forecast suggested. Just about got a white light full disk before the clouds came in. 20150515 by David_The_Bears_Fan, on Flickr 20150515mono by David_The_Bears_Fan, on Flickr
    5 points
  8. Just waiting for those cristal clear winter nights! Canon EOS Rebel Xs (modded) 30x300" 35-80mm lens set at 35mm F/5 ISO 1600
    5 points
  9. It's been a beautiful sunny morning, so I've been capitalising on the sun being out and done a bit of solar viewing/imaging with the 80mm frac and DSLR. Loads of sun-spots today and it's worth a view if you have your solar filters. If anyone has a bit of n3.8 solar film I could have it would be great, as I am imaging through the visual quality 5.0, however it still captures the sun-spots a treat
    5 points
  10. Simple, Detail, the more aperture you have, the more resolution you have and for me it's all about the detail. For example, I have an 80ED and a 10" newt, I could pretty much fit M33 in the FOV of the 80ed but would rather take the time to shoot a mosaic at a higher resolution. may take a few years to complete but for me it's worth it. Mike.
    5 points
  11. We don't just do 400 hour images here! This is a real quickie to see what happens if you take just one ten minute sub in each of LRG and B. We don't have the right FL for the Sombrero at the moment so this is massively cropped. I used a synthetic Lum derived from the RGB to combine with the real L but, as usual, the 30 minutes of RGB had far less signal than the ten minutes of luminance. So here's the full forty minute's worth. Olly
    4 points
  12. Hi guys, I have reprocessed this image, Soul nebula in narrowband: Shots: 10x900 in ha bin1 10x900 in OIII and SII to bin2 Equipment: TMB105/650 QHY9 EZG60 QHY5L-II AZ-EQ6 by HAS Regards Juan
    4 points
  13. It's another one of those May days when the Sun shines, where it's summer in the shade and feverish in the light As promised the Sun today has truely arrived in all its splendour. After sketching and observing the Sun this morning (woken up early by the visiting in-laws ), I took a couple of snap shots of the rising temperature. As can be seen, in the space of a mere 120 seconds it rose from 54ºC to 56ºC and as anyone who's ever been to the east of Spain appreciates, midday is still the morning Sun and temperatures will continue to rise reaching their peak somewhere between 14:00 hrs and 16:
    4 points
  14. Had two nights trying to get to grips with my first guiding experience with a Lacerta MGEN and Orion 50mm mini guidescope. Had all sorts of problems, probably due to the power supply dwindling and causing the MGEN to misbehave, but here is my first sub anyway. Only a single 90 second exposure but it is a start!
    4 points
  15. Yayyy! Cygnus is back, and this is the first target available within it from my location. I wasnt sure how it would turn out becuase I knew a few of the subs were taken with someones washing line in the way - but it seems ok. Its nice to be able to image once again without being plagued by gradients!! Anyway, this is just under a couple of hours worth - the sky was alright, some passing cloud but nothing too damaging. Hopefully I can revisit sometime soon and double the amount of Ha to sort out the noise in the wispy bits, and if possible - some OIII for a crack at cannistra colour (fingers cr
    4 points
  16. My first proper attempted with the new scope; a Skywatcher Esprit 120ED. Taken from the back garden on Tuesday Night / Wednesday morning. Consists of 9 x 5 minutes 1x1 Luminance and 9 x 4 minutes 2x2 RGB. Flats and Bias applied, and the flats were absolutely required as there were loads of dust bunnies . All processing done with PixInsight, and once more, huge thanks to Harry for the brilliant tutorial videos . Not quite ready to do a review of this scope yet, or the Lakeside Astro Motor Focus (which is just fantastic, out and out five star bit of kit), think I need to a couple more sessio
    4 points
  17. GSO 12" F/5 Canon EOS Rebel Xs (modded) 39x60" ISO 1600 Full Res: http://www.astrobin.com/full/180127/0/
    4 points
  18. Finally, the last couple of nights have been clear - best part of a week with the NEQ6 and only just been able to play! First impressions? It's a big fellow! Fair dwarfs the EQ3-2. I have read a lot of comments about the poor build quality of Skywatcher mounts and I am sure there are much better but, with just the EQ3-2 as a benchmark, it is pretty impressive to me. Big, heavy and rock solid. I spent a few days playing inside and following some of the AstronomyShed tutorials on YouTube to start getting it set up, polar aligned etc and then sorted out tube rings and guide scopes. The clocks ar
    3 points
  19. Been a while since I captured these only recently got around to finishing them. I must try and spend equal time on capturing and process Archimedes (left) Aristillus & Autolycus all taken with C9.25/ASI120mm + Pro planet742 filter. 4,000 frames per image stacked around 500 in Autostakkert, lightly processed in Photoshop.
    3 points
  20. A few months back the focuser on my 100ED Apo gave up working and finding the part to replace it was near impossible as it is not an off the shelf available part. OV said they could get it but would take a minimum of 4 months and would be £130. So because I wanted to press this scope into some white light service this Summer I ordered a Moonlite from FLO. Even this took a while due customs issues and other delays but none of this was FLOs fault and Martin at FLO kept me updated all the way. Thanks guys, super job as always. Well now its here and it fitted on like a glove. It feels super qualit
    3 points
  21. Hi guys Here is the Cave nebula (Caldwell 9) Imaged from Newton Aycliffe, Always wanted to try for this target , Its a faint beast, probably not the best time of year to capture it as its low down. Details FSQ85, SX694 ccd 15 x 15 minute subs in Ha, and 20min each RGB I do have about 3 hours of Oiii data, so hoping to get some Sii data to try produce a complete narrowband image. Thoughts and criticism most welcome paul j
    3 points
  22. First day of viewing for quite a while and what a lovely greeting. Full of activity and the most lovely prom at 2 O'clock. If you get the chance well worth a look. The wife has spent more time at the scope than me.
    3 points
  23. No astronomical observing light up here in mid May, but just a scan with bins showed how good it can be. Been waiting for a clear night and small darkness , then out at 2 and overhead the sky was just packed with stars. In and around Ursa Major the bins showed the granulated goodness of a packed sky. Down to Alkaid and the fuzz of M101 on one side and M51 on the other. M13 just glowed between it's two capture stars and all the arms and legs of Hercules were there. Corona Borealis showed a bright crown. Between Cor Caroli and Arcturus I caught he glow of M3. A bright Saturn was sitting in the
    3 points
  24. More 130pds goodness..... (larger image & more info in deepsky section):
    3 points
  25. Hi all, I think I took this image of AR2342 flaring a bit at about 6.50AM. It was quite blurry, maybe Sol was down in the murk? I've sharpened quite heavily to try and bring out a bit of detail. Thanks for looking, and good luck for some weekend Sun if your solar setup is on standby. I am a bit worried because for once the weekend forecast is actually showing some partially sunny patches on Saturday in the afternoon, this can only mean doom and gloom!! Luke --- 13th May, 2015 Equinox 120, Quark Chromosphere, Grasshopper 3 camera (ICX687), 0.5x reducer, cup of wake me up coffee (ND3)
    3 points
  26. Hi all, I was very lucky to catch some Sun this morning, I nearly didn't try as I could already see clouds in the distance nearly half an hour before the Sun would clear the tree. But the clouds took their time. Seeing was poor and I struggled to process and I think my 120mm scope was a bit overkill for conditions, but there's not really any point I guess taking images in poor seeing unless I am going to process them! Thanks for looking, Luke --- 14th May, 2015 Equinox 120, Quark Chromosphere, Grasshopper 3 camera (ICX687), 0.5x reducer
    3 points
  27. No pies for you then Adrian ;-) Sent from my Fone
    3 points
  28. Tuesday night was the best night for ages, calm, clear and no dew. Had a few problems guiding, don't know why but wasted an hour, In the end settled on having a crack at IC1396 having not really tackled it before. It's still quite low down and got just over 2 hours but the first 12 subs were not so good. Decided to stack the last 14 as the sky was darker with the streetlights out. 14 x 300secs with Canon 60Da, Canon EF 200mm L f/2.8 @ ISO 1600 Thanks for looking.
    3 points
  29. I always feel the same about this: 12inches too big in most circumstances if you are on your own lugging it around and trying to conjure the motivation to set it up. 8inch too small, you will always wished you were straining a bit harder to lug it around, 10inch is perfect the balance between fulfilling an aperture fever and not blowing a blood vessel in your eye to move it. I do use a 10inch mirror in light polluted skies and it packs more than a punch. All the objects you mention look great in it. Regrets = 0/10.
    3 points
  30. I've recently come across this piece on the web written by Alan MacRobert from the well known and respected astronomy magazine Sky & Telescope. It is well worth a read if you are thinking of getting into the hobby - ideally before you leap in and buy a telescope : https://www2.wwnorton.com/college/astronomy/astro21/sandt/startright.html As someone who has been in the hobby for many years now I found that many of the hints, tips and pointers in this article are right "on the button". John
    2 points
  31. ..thought this might be of interest to forum members:- http://www.bbc.co.uk/news/science-environment-32734978 Nick
    2 points
  32. Only got around to doing these now, been doing mosaic practicing............not very well I can tell you but it all goes into learning I guess. Hope you like em & thanks for looking.
    2 points
  33. Ten frames over a period of 35 mins. C8 SCT, 2.5x powermate & ASI120MM. 1 min captured for each RGB filter (42GB of data in total captured), 5000 frames from each filter stacked in AS2!. James
    2 points
  34. I use red wine. Whenever I get an urge to clean the mirror I pour a glass of red wine, sit back and enjoy it and forget all about the mirror. Unless there is a seriously good reason for cleaning the mirror it is best left alone. If absolutely necessary follow keith's advice above
    2 points
  35. What is wrong with water with a couple of drops of washing up liquid and lots of cotton wool? And a final rinse in distilled water. Have a look on youtube. PS I use PVA to clean records, B&Q decorators brand; videos also on youtube. .
    2 points
  36. Interesting! I just started with AP this spring and bought an Explore Scientific 80 mm triplet apo (got good reviews and costs about the same as SWs doublet 80mm) and I have been very pleased. However, I got a SW 250 Newtonean as a packet deal with my NEQ6 mount (a SW 250 costs even less than the 80 mm triplet). The Newtonean is so bulky so I have so far not got around to use it for AP, but your pics and that by Red Dwarf further up in this string convince me that it would be worth while and I will surely try this autumn (when the sky gets dark again up here in Sweden). Still, for a beginner I
    2 points
  37. You don't need to cheat by looking for diffraction spikes!
    2 points
  38. If you're dissatisfied with 100mm after 2 months then you'll probably be dissatisfied with 8 inches after 2 months. But if 100mm is still fun after 2 months then keep having fun with it. Try getting it to a dark site (where you can easily see the Milky Way) and it will show you more DSOs, in better detail, than a 16 inch at a site where the MW is not visible. It would certainly be capable of showing all the Messiers, for example. My personal rule of thumb is that to get a "wow" factor you should increase aperture by at least 50%. Going from 100mm to 8 inches would certainly do that, as would 8
    2 points
  39. I feel that F/4.7 is a little too fast. It challenges lower cost eyepieces because they will show astigmatic stars in the outer parts of the field of view, the scope optics will show a fair degree of coma and the "sweet spot" for accurate collimation and therefore diffraction limited performance is rather small at F/4.7 at just over 2mm compared to nearly 5mm at F/6. Thats not to say that these F/4.7 scopes are not successfully used by many members here but I think it would be nice to have the choice of a slightly slower scope in the 10" aperture, accepting that would need a longer tube of cou
    2 points
  40. Chris, you might fancy a quick read of this brief report I made a couple of years back. The camping site I stayed at was amazing; it was only for over 18 year olds, the staff were all British, extremely friendly and very helpful, and the site was very well-equipped (swimming pool, tennis courts, kitchens etc) and really, really peaceful. Tip-top. The area of Quercy has loads of fabulous sites to visit to boot
    2 points
  41. 10 inches is a great aperture and can be a "scope for life" quite easily, especially under dark skies. I just wish the readilly avalable ones were a more "friendly" focal ratio than F/4.7.
    2 points
  42. The 100 Greatest Stars by James Kaler
    2 points
  43. Very impressive build Pete, I am following with great interest. John
    2 points
  44. I see it just like ordinary nature photography. If you want wide field (landscape) you put a wide angle lens on your DSLR, which in the AP world would correspond to a small 80 mm refractor (about 500 mm focal length and f6) and if you want a pic of a bird in a tree you use a telephoto lens. In AP terms that would correspond to something like a 200 - 300 mm Schmidt-Cassegarin (2-3 m focal length, f10) that you can use for taking pictures of small things (as seen from earth) like the majority of galaxes. So, even if I am new to astrophotography I soon realized that I needed at least two scopes t
    2 points
  45. So I’m in France in April and there’s a telescope in the window of a secondhand shop. It’s a 4” Newtonian on an equatorial mount and I know nothing. It’s priced at 48 euros. One of the leg clamps on the tripod is busted and the seller has wrapped a G-clamp around it as a cheap fix. It comes with two crummy eyepieces and an even crummier Barlow, but I don’t find out how bad they are until I start climbing the learning curve. The eyepiece holder has clearly long since lost whatever grip it had so the eyepieces slop around in the holder. The finderscope will fix in any position it likes but
    2 points
  46. Hi and welcome to the forum. Stellarium is very popular among many here and has some very useful features such as being able to configuring it to match the view of the night as seen from your observing site and also the advance date/time feature which is idea for anticipating what will be coming up and when, especially if your sky view is partially obscured. Clear skies and hope you enjoy your stay here.
    2 points
  47. Just took this Jupiter and moons in between the clouds 2s, iso 800, 200mm f4 on shaky tripod with self timer I just did a couple of quick curves on the jpeg. Jupiter looks quite big - presumably just bloating really? Still, looks in focus? Was quite surprised to see the moons with just 2 secs - could even see them on the screen. Opinions welcome Will hopefully do some more testing when I get some proper clear skies. (FWIW I just undid the 3 screws which hold the focussing barrel in place and through trial and error I think it goes past infinity a tad.) Louise
    2 points
  48. I've found that there are some objects where an O-III filter makes a really huge difference to the visibility of the object. The Veil Nebula complex is one, M97, the Owl Nebula is another. The Veil, to me, is sufficiently spectacular with the O-III filter to be worth the price of the filter alone being extensive, comprising of a number of distinct elements with each having a distinct character and beauty. This said though, I find many other nebulae where I prefer the unfiltered view most of the time although the O-III and the DGM NBP do bring out other aspects of these objects so it's interest
    2 points
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