Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_celestial_motion.thumb.jpg.a9e9349c45f96ed7928eb32f1baf76ed.jpg

Leaderboard


Popular Content

Showing content with the highest reputation on 13/09/17 in all areas

  1. 6 points
    After a second night of great sleep, my mojo is pretty much back and on fire now - so last night I put the gear out for another couple of hours to top up the data I took last weekend. The added depth of data has allowed me to really get in there with sharpening and contrast enhancement to bring out the black scratchy stuff, so theres plenty of texture and hardly any noise. For it to be 100% noise free would probably take 6 hours exposure, which is very doable since its getting dark much earlier now. But I am keen to add some OIII and do what Martin did the other day with his IC1396 and try to blag a hubble colour image out of it - so next Moonless night, I'll be on the case. The corners have turned out pretty nicely as well 16x900 (Ha) Star71, Atik 383L+, NEQ6 Thanks for looking Pixel peepers and corner freaks version: HERE
  2. 4 points
    The Lunt is lighter than the 21E/30ES which really helps out on this little scope and gives a 2.8 deg TFOV.More would be better... I was out again last night with the MW nice but not sharply defined and I had zero chance on these objects, the 15" gave relatively soft views of the Veil etc and I didn't observe long to be honest. The SW120ED does pretty well on some of the faint stuff, the 90mm f7 Raptor triplet not so much. These little (highly obstructed) newts do really well on the targeted objects Damian and I'm not done pursuing future scopes for them,most likely around f3.
  3. 3 points
    Here's my 3rd attempt at a DSO. After M31 and M101 I tried to capture a nebula... I am still struggling with colors. I saw many different examples (red hue, extreme saturation,etc) I never quite know what it "should" look like... I lack experience and still have a lot to learn. All comments are welcome. =================================================== Imaging telescope or lens: Sky-Watcher ED 80 Pro APO / Imaging camera: Canon 1000D (modded) Canon 1000D / Mount: Orion Sirius EQ-G /Guiding telescope or lens: Orion Mini 50mm Guide Scope Guiding camera: ZWO ASI 185MC Focal reducer: Skywatcher .85x Focal Reducer & Corrector Software: INDI/Ekos Dates: Aug. 5, 2017 Frames: 39x300" Integration: 3.2 hours Locations: Observatoire AstroQueyras, St-Veran, Hautes-Alpes, France ===================================================
  4. 3 points
    With the Moon due to rise around 22:15 last night, I was on a mission to get as much observing in as I could before the sky got too bright. While I was waiting for darkness to fall, I spent some time with Saturn. As it was a slightly higher in the sky than my recent viewings of it, I was hoping I might get a better view. Unfortunately the seeing wasn't great so there wasn't much detail to be seen. Still lovely to see the ringed planet and it's largest moon, Titan, though. With darkness starting to take hold, I moved onto Epsilon Lyrae, the Double Double. Nice split at 180x using my 5mm ortho. The first pair split easily compared to the much tighter second pair which had only a tiny gap visible to confirm the split. Next up was M51. I spent most of the summer using SkySafari to star hop my way around with my low power eyepiece. Over the last couple of sessions, I've quite often used the simple method of eyeballing the location with visible stars and my Telrad. I've been pleasantly surprised by how many objects I've found this way and normally much more quickly. M51 wasn't exactly jumping out but was noticeable at 38x. I moved up to 50x for a closer look. With averted vision, the bright cores stood out well among the dimmer grey fuzzy patches of the two galaxies. Patchy cloud started roaming across the sky so I had to endure periods of waiting for a cloud to move past my chosen target. The open cluster of NGC 6633 found it's way into my eyepiece during one of the periods of waiting. A very nice loose cluster with a number of brighter stars making a good bonus find. My main target was the planetary nebula NGC 6572. It's well known for it's bright blue-green colour. It's a very small nebula which I think is what makes the colour more noticeable. On finding it, I went straight up to 180x mag and felt slightly disappointed by the colour of the nebula. I then went back down to 38x and the colour became much more intense. There's definitely a balance to be struck with magnification when looking for colour. The clouds had now cleared out, so I decided to try for the Iris Nebula (NGC 7023). Finding the right area didn't prove too difficult but seeing the nebulosity of the nebula proved beyond me on the night. I experimented with magnification as well as trying both my UHC and OIII filter. One of the challenges of being a beginner in the world of astronomy is picking realistic targets. On this occasion, I'm not sure if it was an unrealistic target or simply conditions on the night. With the Moon now above the horizon, time was running out so I settled on another planetary nebula, NGC 6543. I've seen the Cat's Eye Nebula before so finding it was fairly easy. I've read about the technique of "blinking", passing an OIII filter in front of the eyepiece to confirm the sighting of a nebula. It was very effective and the nebula stood out well against the background as the filter passed across the eyepiece. Like NGC 6572, the blue green colour of the nebula stood out most at lower magnification. At 180x, there was less colour but it was noticeable how much bigger the Cat's Eye Nebula is compared to NGC 6572 which even at high magnification wasn't much bigger than a star. I spent a while looking for the brightening of the central star at the centre of the nebula but wasn't able to detect it. The Moon now started to rise above the roof line and so brought to an end to the evenings viewings. I packed up with the happy content feeling that a good session brings.
  5. 2 points
    Captured over several nights in August. One night of reasonable seeing but very twinkly on the others. Scope: 10" LX200 ACF reduced to F7.5 Camera: QSI 532 wsg Filters: Baader 7nm Ha 22 x 1800secs OIII 12 x 1800 secs. Captured, calibrated and combined with Maxim and processed in PS with the OIII mapped to both green and blue. Posted on the deep sky imaging board with little RGB star colour but this hasn't been included in this image
  6. 2 points
    It's been a very busy year for me this year since march we've had at least one outreach event to do sometimes it's been 3 a month, still got a few more to do before the years over too. Most of them have been solar events but we have had the odd nigh time one too.
  7. 2 points
    I agree with everyone, ask for a new scope and case, even if it looks ok. Thats a serious knock to do that damage. Good luck Nige.
  8. 2 points
    You might also post your query on Cloudy Nights as it is US centric. You might find someone on there from your local area who could direct you to a local club where you could look through different telescope types at a club star party. I think what you want most is tracking and goto. There are Dobsonian mounted Newtonian telescopes with goto that tracks as well. They're not very useful for DSO astrophotography because they don't track equatorially, so the imager would need a field derotator. Moving to an equatorial tracking mount means more weight per aperture and more setup time than with a Dobsonian mount unless you can permanently mount it in an observatory, so just be aware of that. Equatorially tracking telescopes can also place the eyepiece in awkward positions during the night. Most DSOs are imaged with APO or ED refractors rather than SCTs, Maks, or big Newts because they have shorter focal lengths, are unobstructed, and have tighter stars into the corners as a rule. Yes, reflectors can be corrected for most aberration issues, but at the end of the day, they're still obstructed systems.
  9. 2 points
    No it's not - the case took severe force from the scope - I would ask for a new scope and case.
  10. 2 points
  11. 2 points
    Tell me about it Ray! I collect the data and then I'm kind of like "now what" when it comes to processing it all! Well, not quite that bad, but need a lot of practice.
  12. 1 point
    Hello All ,here is an early entry for your diaries!!! I am once again pleased to announce the dates for the 2018 Galloway Spring Gathering to be held from Monday 19th March 2018 until Sunday 25th March 2018,a move away from our usual February date to coincide with the Kielder spring bash.Running back to back gives people with a long journey a chance of a long stay without too long a haul. Given the inclement weather conditions this year we may fair rather better. Well we can hope. The location for Scotland`s Premier Star Camp is the award winning http://www.drumroamin.co.uk/ campsite ,and as usual our hosts Lesley and Ralph Shell will be on hand to provide us with a fantastic location,superb facilities and their renowned hospitality,all the bookings will be handled direct with the campsite. Always popular are the electric hookups book early to avoid disappointment ,any questions feel free to email me or Lesley at enquiry@drumroamin.co.uk. You can as always come earlier and stay longer,see you all in March,or if you need reminding November this year. Regards Mike
  13. 1 point
    Despite recently clocking up my one year observing anniversary I have never explored the constellation Cassiopeia, one of the most obvious constellations in the sky. Tonight therefore I took the opportunity with a break in the clouds to observe the Cassiopeia double stars (and multiple) as shown in the book Turn Left At Orion. In book order, Iota Cassiopeiae away from the 'W' on a line from Delta Cas through Epsilon Cas was a nice tight three star system. Struve 163 not far from Epsilon Cas showed great colour variation between the orange primary star and the two fainter blue companions. While out at this end of the constellation I took a look at the two variable stars RZ and SU Cas. They are supposed to change magnitude by about a value of 1 over a period of two hours every couple of days. I'll have to look around to see if there is a timetable for this on the Internet as you'd need some patience otherwise just to keep looking. On to Eta Cas which is a bright pair with a lovely red secondary star. I've become quite adept at manually star hopping to find targets but Burnham 1 took a few minutes to find. It's a small target forming the corner of an equilateral triangle with Eta and Alpha Cas. Burnham 1 is a tight four star system. Star B is magnitude 9.3 and only 1.1" from the primary star. I think that I could see it with averted vision after staring at the system and letting it drift repeatedly across the eyepiece view. I don't think that I was imagining it. I couldn't see any nebulosity from the Pacman Nebula but didn't try a filter. A job for a dark sky site rather than my suburban back garden. Struve 3053, north of 10 Cas is a nice orange/blue pair. The last double on my list was Sigma Cas. This is a pleasing tight pair of blue stars. The best views of these stars was at 125x magnification. Nice and crisp views. I went up to 200x to look at Burnham 1 but the gain in size was almost lost with slight fuzziness.
  14. 1 point
    Hello Everyone! Just wanted to pop by and say hello, i have been hovering around these forums for a while reading up on things and learning as much as i can. I decided that today was the day i sign up and say hello! I am a beginner AP and Star gazer. i have taken quite a few photos using my camera (Nikon D5300 Stock lens) and i have (imo) produced some great photos I am heading up to Northumberland at the end of October and have decided to purchase a telescope (Skywatcher Explorer 150P EQ3-2 / EQ-3 PRO GOTO) i know that this isn't the best choice for AP but i don't have a big budget at the moment and seems like this ticks all of my boxes for what i want. I am very excited to see what photos i can get, any advice would be appreciated (techniques, equipment advice etc). A little about me.. i work in IT and have been in this industry for 7 years, currently studying towards Cisco CCNA cert which i am finding quite exciting. i have always loved the starts and i know my way around the sky a little bit but will be learning more as i start to explore more. i have a passion for photography, as i love my camera and i hope to be able to produce some great photos as the weeks/months/years go by. I am Married and have a little Westie and we all love to travel around the country doing costal walks and seeing the costal scenery. Hope to talk with you all soon! below are 2 photos i have taken using my camera. http://uploads.im/OdglB.jpg http://uploads.im/1sSXR.jpg (when i took the 2 photos above, i forgot to shoot in RAW format so all i had was jpg... learnt my lesson after that, only shoot in RAW now.) Thanks, Tony
  15. 1 point
    Hello everyone, just a quick update...... welll a lot has happened since the build and the family have had some nice nights in the obsy. soon after I finished the build I decided to take up carpentry as I thoroughly enjoyed building this. I took one year in college doing my level 1 in carpentry and joinery then landed an apprenticeship with a good firm, I am now qualified and studying advanced. for my dad it's been a bit more tricky and in hindsight would probably have been better to not go down the imaging route. we've had some nice nights but he can't really get his head round computers and all the different software. When we first talked of him buying a scope I suggested he get a big dobsonian but he was adamant that he have a big computerized telescope with an observatory lol so I did as he wanted for his retirement. sadly as time has gone on he's realized that he just wants to use a telescope for visual and not imaging(after spending a fair few quid on imagining equipment) So I decided I'd make him a dobsonian mount for his 250pds. I've done most of it and left it at my dads as he wanted something to do in the week. It's now been painted and I am going to put it all back together at weekend. hope all is well folks
  16. 1 point
    I too had no intention of ever taking my scope overseas. But British Skies in the South East have become progressively more disappointing and unpredictable whilst accommodation ever more expensive. I spent four nights last week in a cosy woodland lodge at Kelling Heath, which cost me £450 to merely watch dense clouds. It has been almost two months since I last witnessed decent conditions in the UK. By contrast, I can get to Tenerife for barely more if I plan ahead and stay in budget accomodation. Then above the clouds in the caldera of Mt Teide is just awesome. But Ecuador and the Galapagos exceed everything.
  17. 1 point
    If you take your entry pupil (mm) for your eye and multiply by the focal ratio of the scope and stay inside that ball park figure, then you should not see the central obstruction. How much further you go will be trial and error, as each pair of eyes will reach the point you desire differently! Refractor users don't have the same limitations when they want to go low power .
  18. 1 point
    Am sure you'll be pleased with both those eyepieces. They will give great views in the C8 Edge - hope you enjoy it as much as I did
  19. 1 point
    It certainly isn't something on the front of the lens, it could (but I doubt it) be on the back elements of the lens. But most likely it is on the sensor. Stop the lens down to its smallest aperture (f/32 or whatever) and point the camera to either a bright light or the sky or even a white or evenly illuminated wall and take an image. The dust bunnies should be much more defined.
  20. 1 point
    Thank you! NGC 7023 is listed as mag 7 so In theory looked like a good target for me. Although I've not seen any reports of people observing it which is normally an indicator that it's a more challenging target. I've often wondered whether the heart and soul nebulae are good visual targets too. I've seen lots of great images of them but no reports of visual observations of them
  21. 1 point
    It is not unreasonable if the apparent thump it has taken is as bad as described. Simply something may have moved significatnly that will cause you continuous problems and so to an extent problems to the vendor. Likely easier for them to replace it and if they so wish they can check it over fully when they receive it, and you can get on viewing or whatever without a series of correspondance. What is the scope, if refractor then movement of the lens in the cell is the first concern and equally the focuser end also.
  22. 1 point
    What sort of telescope is it? A simple star test will demonstrate the optical situation to you. If you don't know what to look for, please ask.
  23. 1 point
    I wouldn't recommend the 8.8mm ES82 for that scope at the moment. You would use it rarely. The ES82s are great eyepieces for DSOs but imho the lower focal lengths are terrible on bright objects like the Moon. I'd say the 14mm ES82 would be the best progression from the 24mm to give you a mid-high power at 145x which would be great for globular clusters and planetary nebulae. For lunar and planetary observation I'd go for an orthoscopic around 10 or 11mm since you have tracking the lower eyepiece AFOV is not a problem
  24. 1 point
  25. 1 point
    The LifEPo4 is greener if environmentally concerned both for number of charge cycles and for not using precious metals, I also thought the discharge curve was better/longer too.
  26. 1 point
    Nice collection. It has only just stopped raining here, but new clouds are in the offing, so no hope of imaging or even observing here
  27. 1 point
    If you go to the top of this page then >resources>astronomy tools there is a field of view calculator that can be used for visual or AP and will give you an idea of what focal length/camera combination would suit your interests. I would say that you can get great images with just a camera lens of about 135mm fl and its relatively easy to mount, a large scope on the other hand will require something much more substantial (expensive) plus you have to factor in guiding etc. Alan
  28. 1 point
  29. 1 point
    I used to have both of them. Very fine eyepieces.
  30. 1 point
    You are pressing "Apply" after moving the sliders aren't you? Peter
  31. 1 point
  32. 1 point
    The Sculptor or Silver Coin Galaxy ( NGC 253 ) in the Sculptor constellation - re-processed from the original subs The Sculptor Galaxay ( NGC 253 ) ( Please click / tap on image to see larger and sharper ) .................... The Silver Coin Galaxy ( NGC 253 ) in the Sculptor constellation ( aka the Silver Dollar or Sculptor Galaxy ). Caroline Herschel in 1783 was the first to recordthis bright ‘nebula’ in an area of the southern sky that Nicolas de Lacaille had called the “Apparatus Sculptoris” or “the sculptor’s studio”. Whilst relatively close to us compared to the billions of far more distant galaxies in the Universe, the great size of the “Sculptor Galaxy” and the huge distances involved are still hard to comprehend. To put this into some perspective, the light that is just now reaching one edge of the great disc left the opposite edge when the Earth was in the grip of last great Ice Age 70,000 years ago and the light we now see has been travelling towards us for over 11 million years. Details: NGC 253 - "Silver Coin" or "Sculptor" galaxy. Catalogue location: RA 00 48 23, DEC -25 11 52. From Image Solver: Image centre: RA 00 47 33.4 Dec. -25 17 11.1 Focal length: 1008.5 mm Field of view: 1d 19' 2.2" x 53' 0.3" Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector & no filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 20 x 180 sec ISO 800, long exp noise reduction on. Pixinsight & Photoshop. November 4, 2016 re-processed from original subs ( including Photometric Colour Calibration ) - September 9, 2017 ........... Details of Sculptor Galaxy from SkySafari for the 4th of November 2016 around 10pm local time ............. Annotated version ( using Pixinsight ImageSolver and Annotation scripts ) Sculptor Galaxy ( NGC 253 ) - annotated The cyan tags ( 35 or so ) relate to galaxies recorded in the Principal Galaxies Catalogue. The white tags are brighter stars as recorded in the Tycho-2 Catalogue. The number beneath is the magnitude of the referenced star. .......... Link to previous version below ...
  33. 1 point
    Great collection. Quite a bit going on in H-alpha at the moment
  34. 1 point
    Windows 10 has the Codecs built in where as previous Windows did'nt.
  35. 1 point
    It's great to see Orion again in the pre-dawn sky. The new season is underway and I'm looking forward to spending more time at the eyepiece enjoying the views first hand. Are you heading to Bala again?
  36. 1 point
    Wow Dec, just wow! Incredible image. Lovely job Mark - you can't beat a nice Milky Way shot, especially when it includes my Brocchi's Cluster Well, one week today and I'll be heading off to Kelling Heath Autumn star party. Hoping this weather picks up a bit before then and storm Aileen moves away.
  37. 1 point
    Good news on the kipper front! You've pushed the image harder in the same processing direction as the original and, for me, it's gone just a tad too far, developing a slightly 'etched' look where the sharpening seems visible. The stars, though tiny, are also a bit overly sharp to my eye. Personally I'd give the small ones a bit of blur. For all that, it's an admirable image and gives a refreshing new feel to a very familiar target. The long striations running L-R are excellent. Olly
  38. 1 point
  39. 1 point
    i might try upping the ball diameter to 25mm and printing the ball and the tube plug as separate pieces and using a metal bush to replace the neck section. it's a natural weak point in the design that would probably still fail. it was 100% infill at 0.1mm layer height.
  40. 1 point
  41. 1 point
    Thanks Piero, this is the stock mirror yet and it has issues around stars like Vega. The new one should be here soon.
  42. 1 point
    Brilliant programme, insightful and fascinating to gain understanding for the diversity of geography and extraordinary landscape features, particularly presented by the compilation of incredible images. Profiling how credible it is increasingly becoming to send humans on a Mars mission feels like it may not be too distant.
  43. 1 point
    I like those. Number 2 is the best
  44. 1 point
    If I recall correctly there was someone selling one of these on this forum in the last couple of days. Having said that, it could have been sold... But do have a look. If that doesn't work out I'd be prepared to help. I'd give you my address details via PM. You could purchase the item and have it sent by Royal Mail to me. I'd then send it on to you via my village post office by whatever postal service you want; tracked, signed for, expedited etc and would email you a copy of the tracking detail and receipt. Then you could reimburse me the postage via PayPal. I'd mark any paperwork, if required, with whatever value you wished...
  45. 1 point
    Nice shots there Michael. Looks like we were out at pretty much the same time. It's nice to be able to see how different setups compare as I have some prom shots I will post up in a min.
  46. 1 point
    I aligned the Oiii and Ha in PI using the star alignment. Desaturated some of the stars. Hopefully this is an improvement.
  47. 1 point
    Beautiful sunshine this morning, so I got the scope out for an imaging session. Seeing was not good, but I still got some decent disks. There were some fireworks going off where AR 2673 has retreated just beyond the limb, visible in the part inverted shots. The new AR in the east is looking pretty good, and it is also accompanied by a faint prom. WL, grey scale: WL, pseudo colour: Ca-K, grey scale: Ca-K, pseudo colour: Ca-K, part inverted: Ca-K, part inverted + pseudo colour: As ever, best at full resolution. A full set of data for an H-alpha mosaic are currently being stacked.
  48. 1 point
    Here's a sequence with both 2nd and 3rd contact Baily's beads: Total Eclipse: Second Contact through to Third Contact by James West, on Flickr
  49. 1 point
  50. 1 point
    The 120ED with a low power wide field eyepiece will give you jaw dropping rich field views of the milkyway. Add a UHC filter and the advantage of the wide field of the ED will become obvious, as the Veil, North American Nebula and Pelican Nebula glide effortlessly into the super Sharp wide field as you sweep through Cygnus this summer. You say you're mainly interested in dso's, but the ED will deliver laser etched, high power views of the moon and planets too. It's true that aperture counts for a lot when hunting fuzzies, but the ED120 is no slouch when it comes to comets, dso's and binary stars. It was once pointed out on Cloudy Nights that, "If aperture is King then quality is Queen, and as in Chess, the Queen is more powerful!" Buy the frac you'll not look back! Mike
  • Newsletter

    Want to keep up to date with all our latest news and information?
    Sign Up
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.