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Showing content with the highest reputation on 04/11/18 in all areas

  1. 19 points
    Bit of end of session fun as the the moon began to rise- a single 400s sub of the Horsehead & Flame nebulae in Orion. Taken with a GSO 8" F4 Newtonian scope and ASA Keller 0.7x coma corrector reducer (giving an effective focal ratio of F2.9). Camera was a Fujifilm IS Pro full spectrum @ ISO 1000. From a dark sky site in Mid Wales.
  2. 8 points
    13 Percent Waning 4th November Full size, high res image here (big file warning!) 7 Pane Mosaic. ASI174MM on Celestron C11. Mesu 200 mount. Stacked in AS!3, stitched in Image Composite Editor and sharpened in IMPPG. Final processing in Photoshop
  3. 6 points
    With plenty of clear nights this week and having been inspired by Peter Shah's recent Iris I thought I'd add some more data to my effort. Now comprising 215x60s Lum plus 95x120s each RGB (13hrs). Esprit 150ED, ASI1600mm, ZWO LRGB filters, AZEQ-6 mount. Processed in Pixinsight and Photoshop. Thanks for looking Dave
  4. 4 points
    Hello guys, due to frustration of finding time to do my hobby because of work commitments I thought I would do something to reduce my future setup time. So a pier was the answer. I considered buying a commercial adaptor but couldn't justify the cost. So I set out to design a 3d printed pier adaptor and build a concrete pier. I currently have the adaptor on the 3d printer as I am writing this so the project has only just started. In a future development of the adaptor I plan to print the adaptor in pla and cast it to aluminium, but for now I am printing in PETG. For the pier I plan to cast concrete into a soil pipe, either 4" or 6" with 3 m10 threaded rod as rebar which will also mate to the 3d printed adaptor via m10 threaded tube (or long nuts) which will be used to level the adaptor. Here is a link to my pier adaptor so if you like you can test it or modify it to suit your purpose. EQ6 PRO pier adaptor found on #Thingiverse https://www.thingiverse.com/thing:3194096
  5. 4 points
    Another dim slow moving comet, 7 X 30secs frames 20 minutes apart before clouds arrived. Taken last night each side of midnight Star Adventurer WOZ61 Canon 60da Dave
  6. 4 points
    I must admit, I would expect if it came to a straight choice between Patrick Moore and Stephen Hawking, the latter would win. From what I heard, it's meant to be a scientist who is no longer with us? Stephen Hawking gets my vote, sorry! ?
  7. 3 points
    Peter, Stu, Tell me, just how are your comments offering encouragement?? 'Buy a different telescope' or 'Dont bother with Astrophotography'... jeez guys, take a happy pill!
  8. 3 points
    And there it is cracked ?. My excuse! celebrating my new purchase
  9. 3 points
    Now that, Neil involves worms, can, open and a in a different order!! I believe that you should only use Distilled Water and I personally wouldn't use de-Ionised, reverse osmosis, fish tank stuff etc. despite what others say BUT that's just me! ? I have opened the popcorn ......
  10. 3 points
    *Update* my camera has returned 25/10 and the good people of PrimaLuceLab replaced the Baader BCF filter, problem solved !
  11. 3 points
    And an observatory big enough to hold it. ?
  12. 3 points
    This is a combined RGB + Nb image. The RGB is from a Canon 70D + WO-ZS71; the Nb is a 428ex + Samyang 135mm. I took Ha, OIII and SII of M42. I decided to try and combine the Ha and OIII with the RGB without really knowing what I am doing. I included the Ha by combining it with the Red channel in Lighten mode in PS. I used copies of the RGB to combine the OIII separately with the Blue and Green channels. I then mask layered all three in PS to get the image below. Are there 'rules' or 'guidance' for combining OIII with RGB? I basically adopted the same approach as with the Ha but is that the best way? Is it even a good idea to use the OIII at all? Any help or advice on how I should combine the OIII in the HaRGB image would be much appreciated. I know there are a few star shape issues which I think may have been dew on the lens in the Ha, and the core is a bit blown but hopefully I can sort that with another image session. Thank you for looking. Adrian
  13. 2 points
    Alan Turing for me. Computers have had quite an impact.
  14. 2 points
    Unless you think SPM is living on the far side of the moon with Elvis*, I'm afraid he is no longer with us ? Or do you mean 'the man off the telly' wasn't really a scientist...? Amongst his many services to amateur and professional astronomy was his compilation of The Caldwell Catalogue. I think that on its own qualifies him as "someone who conducts scientific research to advance knowledge in an area of interest", which is the generally-held (aka Wikipedia) definition of a scientist. Ady * one of SPM's favourite subjects. The Dark Side of the Moon, that is - not Elvis's whereabouts... ? PS - obviously Hawkins has a good shout - I'm not putting him down - but I think it is SPM's turn..
  15. 2 points
    Hi taken last night with my ED 80 and Atik 314l+ ccd/320E It is a Ha-RGB image. Approx 4hrs Ha with the Atik 314l+ and 1.5 hrs in RGB with a spare Atik 320E coupled to another scope. Alighned in Registar,and fully calibrated. Stacked in DSS and processed in Photo-Shop. Cheers. Mick.
  16. 2 points
    I would strongly suggest spending a few pounds on this - it will save you a lot of time, money and grief in the long run. https://www.firstlightoptics.com/books/making-every-photon-count-steve-richards.html Knowing what the Swedish postal system is like you might want to consider the 'E' version ? Bottom line - with an ED80 on a HEQ5 you cant really go wrong.
  17. 2 points
    I reckon there's quite a few of us who have done/are doing that! It's probably the same bunch of eyepieces doing the rounds too?. I swear I have bought an ep or two (the same actual eyepiece, that is - not just 'another one') that I had sold a few months earlier - TV plossls are a good one for that! Wouldn't it be interesting to be able to track them to see who and where they go to next?
  18. 1 point
    I wonder what people nowadays would consider to be the "best general purpose" observational telescope (all types) and why, given that it should be, above all else, reasonably portable. I am aware that this is very subjective and I'm sure some optics might be better suited to certain subjects of study. But nonetheless, it would be interesting to read what you folks think.
  19. 1 point
    All those organs are but superfluous when put in this context
  20. 1 point
    Neil, a very informative post ? I would also like to add that the more observing one does, the more one's eyes learn and are able to detect. This means one can see more detail in objects that one has previously observed and in general fainter and fainter object viewings become possible.
  21. 1 point
    Wrong! Most folk have TWO presents a year! Why take second best!............saving someone a few quid? Get the Baader, if your gut feels that way, some cash towards the auto-focuser. Can you tell I'm in the same boat?
  22. 1 point
    I agree, I was talking about two filters as a starting point to the collection which will be useful and used frequently. Filters like the H-beta is only really useful on a handful of objects so wouldn't be used as often as a UHC filter... and is not cheap... The OIII would be the next most used filter after UHC so could be added to the arsenal.... As far as the Neodymium filter is concerned, I think it'll be used every time there is a planet in the sky.
  23. 1 point
    ... and one more thing... as Columbo used to say...... careful when operating a OSC with moonshine about..... ( both kinds.... )
  24. 1 point
    Yes you do. It's a bit of a pain as they've been out of stock for a few weeks, but I just heard yesterday that mine is now on its way from the States. I'm sure that within a year or two there will be other adapters on the market which will broaden the EP options for afocal night vision, but at the moment we're limited to the TNVC adapter and eyepieces compatible with TeleVue dioptrx. Will post some reports once I've been able to test the new monocular with my telescopes - will be a real challenge for the technology to see how it performs from a central London location - already I've had some nice views of the Cygnus nebulae by waving a Ha filter in front of the device at 1x magnification.
  25. 1 point
    Thanks for the kind words! M42 was around 1.5 hrs in 600s, 300s and 60s subs to try and capture the DR of the object. The M31 is 10 x 600. Rich
  26. 1 point
    I got my distilled water delivered next day from Amazon...
  27. 1 point
  28. 1 point
    Very nice those Rich. I'm beginning to wish i'd never asked, decisions decisions .
  29. 1 point
    Just STUNNING,as they say that`s a lovely pair. Des
  30. 1 point
    If you have amp-glow or any other sort of large scale non-uniformity in your darks, you need to turn off dark frame optimisation when calibrating lights in PixInsight. Dark frame optimisation in PI determines a global scaling factor based on minimising residual noise after dark subtraction. This works well for darks which are uniform and enables use of different exposure or temperatures between darks and lights. For sensors with amp glow, the scaling factor will cause the amp-glow area to under or over correct. You need to turn it off and use well matched darks and lights (same temperature and exposure).
  31. 1 point
    I knew I’d missed my intended target but until I’d plate solved this with Astrometry.net I wasn’t sure what I’d captured. I was doubled up trying to get on the Garnet Star. Anyway, glad I processed it, I’ve found it quite interesting. I’ve actually caught quite a few red giants, the most prominent one being HR7633. This is not in the same league as the Garnet Star but still very large, about 74 times the diameter of our sun making it circa 103 million miles across, 2/3 of the way to Earth. It’s also 916 light years from our solar system, which seems a long way until viewed in the context of our galaxy, then it looks just next door, which is mind boggling. Which brings me on to the other Galaxy I’ve caught near the top, the Fireworks Galaxy, which is a distance 22 million light years and about a third of the size of the Milky Way. Quite pleased it’s arms are clearly showing. NGC 6939 next to it is also showing well. The Image is 30 one minute exposures with my canon 450dslr & Samyang 135mm F2 at F2.8 ISO400 on the Star Adventurer.
  32. 1 point
    Not! My brother and I would have loved to have been more involved in astronomy as children. We couldn't afford it. We begged and borrowed to see what we could. My nephew has saved very hard, but has just bought his first 'scope. How fantastic is that! Yep, learn from the past, but always looking forward, not back.
  33. 1 point
  34. 1 point
  35. 1 point
    I think old Sol is asleep anyway....Dave
  36. 1 point
    Done! Though I don't think I've ever had a £50 note. ATMs only ever seem to dish out 10s and 20s
  37. 1 point
    Here is a portion of the Soul Nebula imaged in Ha and OIII, imaged with an Esprit 150 and G2-8300 camera. I assigned the Ha to red, the OIII to green and blue, not sure what the latter has added to the image. As usual for me, not much integration time, 3600 secs Ha and 6000 secs OIII. I confess I don’t really know what I’m doing with these false colour images, I just played around until I got something similar to other images out there. Can anyone tell me about the object in the lower right quadrant, shown in the cropped image? It’s definitely real as it appears on other images of this object, is it a similar structure to the Bubble Nebula? Thanks for looking
  38. 1 point
    Hi Metro, and a warm welcome from me too!
  39. 1 point
    Hi Olly Now for a start really nice core , being mr pixel police , the stars and the outer of the galaxy seem very soft compared to the core appearing to be image off 2 parts ? But then again I wish I had this data Yes I know winge winge winge ? Harry
  40. 1 point
    Have a look at the IDAS D2. Peter
  41. 1 point
    I know I’ve bought back a scope or two that I’ve sold previously!
  42. 1 point
    Hello and welcome. Peter
  43. 1 point
    I started off using an intervalometer because I already had one with my DSLR so it was familiar ground. After a few months I tried the APT free software and really liked it, in particular I found the large live view/image review screen and the ability to dither really useful. As a result I don’t use an intervalometer anymore. However, I think the intervalometer was definitely a good way to keep things simple when I was just starting up and getting to grips with new things like polar alignment.
  44. 1 point
    Dobs are great, but can be bulky, and not good with low targets, so how about a 120 Apo frac - not too big, not too fast, and no central obstruction. Doug.
  45. 1 point
    different scopes for different folks for me its a 127 Maksutov
  46. 1 point
    Very cool, you don’t see many framed within the star field like that.
  47. 1 point
    Given that it has to be portable then without question something like an 8” SCT or similar
  48. 1 point
    You have the Tak 180ed.... Mmmm nice!
  49. 1 point
    Pretty pleased with my first Ring Nebula in colour. Just 800s of luminance, 510s H-alpha, and 720s O-III, all with the ASI178MM behind the little APM 80mm F/6. Might grab more data tomorrow. I processed the images in APP, combining L with H-alpha for red, and O-III as green and blue. This doesn't do much for star colours, but at least it does colour the nebula. Crop with just some amp glow and lack of overlap between channels cropped out: Tighter crop
  50. 1 point
    A video is worth a gazillion words..... please be patient, the video is 2m46s long, there is a delay after the lid opens up and the telescope deploys. (the thumbnail picture was taken with my GF1 and an old 50m Minolta lens, single shot, 8sec) Hope you enjoy it.
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