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About Jkulin

  • Rank
    Sub Dwarf

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  • Gender
  • Interests
    Photography, Playing the Sax, Cars, Astro Photography.
  • Location
    South Staffs.
  1. Thanks for your explanation @JamesF I definitely stop using non UK honey and research where it is harvested sympathetically to the bees.
  2. Thanks, I have only ever seen once a swarm of Hornets before and that was nearly 30 years ago in Norfolk, so not really educated on them otherwise. Slightly off topic @JamesF there seems to be some controversy as to whether Bees are harmed when collecting honey, is that just with commercial operations or does it apply in all cases?
  3. Yep, it was really quite strange it wasn't aggressive and defensive, that was a pint glass. I let it go at the end of the garden and it sounded like a Merlin Spitfire engine, a deep drone.
  4. Thanks James, there was no sting visible, don’t know if that makes any difference?
  5. Jkulin

    OAG wanted

    Adam, have you seen this?
  6. My wife called to me last week as there was a massive bee/wasp in the lounge, indeed it was big, but I don't know if it was a hornet or a queen, any ideas?
  7. I'm really quite pleased with my 10" and I was with my 8" as well, it means your guiding has to be really spot on at 2007mm and mine isn't perfect partially because of the wind and partially because iOptron are releasing a new firmware that should help. Just spending time sorting out my Newt which at F4.9 should allow me to capture more data for the same time, watch the headaches roll in
  8. Kev, this was my first attempt a few years ago, just a little different : -
  9. Thanks for all your likes and kind words, I never expected a globular cluster to look so beautiful, in my early days of Astrophotography I always thought them bland, but then seeing what could be achieved has driven me on to succeed at more
  10. @vlaiv I am probably the furthest from an academic that one could be, I therefore am a practical Man that looks at the shortest route to get a good result without the mathematics, you are naturally a highly intelligent individual that excels at the complexities of a subject, so forgive me if I don't/can't question your thinking, for me I look at my results. I've just finished processing M13, I have done no colour calibration whatsoever, but I am rather pleased with the star colours which I attribute to G2V, I therefore rest my case because it is easier to show examples than discuss the maths, but I do thank-you for trying to explain to a simpleton Here's a link to my M13 that I have just posted: -
  11. I have never been happy with my previous captures and processing of Messier 13, I'm rather pleased this time as it is a major improvement on my previous attempts, I'm particularly pleased with the star colours Capture Details: - G2V Colour procedure 22 x 300s L 11 x 348s R 11 x 300s G 11 x 399s B Altair 10" RC Truss Moravian G2-8200 MkII Chroma Filters iOptron 120EC Lodestar x2 Celestron OAG Guiding was poor as it was windy and I am just waiting for an update for an improved firmware. This is from Wiki: - M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is a red giant, the variable star V11, with an apparent visual magnitude of 11.95. M13 is about 22,200 light-years away from Earth. It wasn't until 1779 that the single stars in this globular cluster were resolved. Compared to the stars in the neighborhood of the Sun, the stars in M13's stellar population are more than a hundred times denser. They are so densely packed together that they sometimes collide and produce new stars. The newly-formed, young stars, so-called "blue stragglers," are particularly interesting to astronomers. The Arecibo message of 1974, which contained encoded information about the human race, DNA, atomic numbers, Earth's position and other information, was beamed from the Arecibo Observatory radio telescope towards M13 as an experiment in contacting potential extraterrestrial civilizations in the cluster. The cluster will move through space during the transit time; opinions differ as to whether or not the cluster will be in a position to receive the message by the time it arrives. https://en.wikipedia.org/wiki/Messier_13
  12. Jkulin

    OAG wanted

    I have three OAG's Adam, A Celestron version, which is superb but no good if you have to maintain a 55mm back focus as it is 43mm wide! The Moravian MKII OAG that I ordered especially to go with my camera and FW is a pile of pooh, it uses a small mirror and the combined distance of the camera, FW and OAG is 55mm, so it is perfect if you use the Moravian Guide Camera but rather challenging if you use something like the Lodestar that I use, I fear that I will have to use it though because of the rather nice CC that I have bought for the VX10 specifies a 55mm Back focus , I bought the ZWO because it is really thin 16-17mm however I will have to have a faceplate machined to accommodate it and that will be my preference when using the VX10.
  13. Hi Lads, Just a couple of things to mention,: - 1. If you are shooting from the same place then the LP levels are unlikely to vary by much and I totally dismiss anything to do with LP as I shoot from my back yard. 2. With regards to Flats, I calibrate my flats every time using an LED flat panel so my flats are always consistent. 3. Not sure what you mean by wiping each sub Vlaiv, just capture the values from the G2V star and use them, there is no need for rocket science, all you are doing is trying to calibrate your captures to represent the light emitted from our own star, who knows what the actual colour is, it might be totally different than what we think we are seeing, all the G2V does is try to balance the images the way our eyes will see them in our solar system. 3. Darks are not necessarily needed with CCD and I'm not sure if they are as vital with CMOS (I don't use CMOS for captures), I do use darks, but not a fresh set, I do them about once a year, but one of the biggest advocates of G2V is my mate Peter Shah, and he doesn't take any darks whatsoever because his full format sensor doesn't have any set point cooling, there aren't many people able to challenge Peters processing. You either believe in G2V principles or you don't, for every person that advocates it there are others that dispel it, all I can say is give it a try and if it doesn't work then what have you lost? BTW when you look on Astrobin at images with the capture details which indicate varied capture times in RGB then you can guarantee that they have used G2V.
  14. Gorann, I have spent some time working on G2V star colours and I am very impressed with the results as some of my images have needed no colour calibration whatsoever, you need to do it for each of you imaging trains, and it doesn't take long to do the calculations. Find a G2V star that is in the region you are imaging. 1. Capture images for RGB at 1, 2 and 3 secs. 2. Choose the duration for the same filter exposure that is not saturated 3. Zoom in and check the ADU or Intensity of each image. 4. Calculate as a ratio of green as being 1:00 So for example my 10" Truss with my Moravian G2-8300 and Chroma RGB filters came back with: - Red 2.41 Ratio 1.16 Green 2.81 Ratio 1.00 Blue 2.10 Ratio 1.33 I will do the same for my VX10, Esprit 80 and Esprit 100 before I start using them again on RGB I just googled G2V stars and one of the results I got was this http://www.solstation.com/stars3/100-gs.htm Hope that helps? NB Just to add, this translated to when I did M51 to 600sec L 696sec R 600sec G 798sec B
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