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  1. Past hour
  2. Here is my latest effort. M51 with a star Adventurer Mini and canon 4000d with a 300mm f5.6 lens. No calibration images taken. I'm pretty happy with it. I'm still learning, only started astrophotography 5 weeks ago and have absolutely basic equipment. For now.
  3. This is a tough one to process if the images have been taken with less than ideal camera and darkness. I know as I've spent 3 nights on it last week from my B6 zone with the cheapest DSLR canon sell and an F.5.6 stock lens. My advice is keep at it as it's definitely possible to ger a nice enough shot with an absolutely entry level setup. I'm a professional 3d animator and compositor and am very well aquatinted with post processing software, but this was very tough. Here is my final image. 68 X 150sec No calibration files Star Adventurer Mini Canon 4000d 70mm f5.6 Processed in lightroom and after effects I'm missing a large chunk of the pelican part apparently. I think your image is pretty decent, you just need to play with it a bit more in whatever processing software you are using. Well done on a tough DSO
  4. Today
  5. 5mm is now sold and 4mm is pending sale.
  6. totrured??? or perhaps massaged into an image....
  7. The NT4 17mm is very sharp, but has field curvature and some mild SAEP (kidney-beaning) when you press in enough to see the field stop. It's hefty (heaviest of all the NT4s), but relatively compact. The ES-92 17mm is better in every way except size and weight. It has a wider AFOV, no field curvature, no edge of field astigmatism, no SAEP, and better eye relief for eyeglass wearers. Below is a comparison image showing the view through several of my eyepieces in this size range.
  8. Thanks John- that’s a good article that explains a lot. An f6 with only 14% central obstruction sounds like it’s pretty dedicated to planetary indeed! I thought I was pushing the boundaries a bit with 18% with my f8
  9. http://www.ianmorison.com/the-maksutov-newtonian-telescope-discussion-survey-and-an-image-of-the-10-day-old-moon/ Like everything in astronomy, compromises.
  10. How does it get away with the smaller secondary John? Is it because of the lens?
  11. I had a look for it tonight once the clouds had cleared but the seeing wasn’t good. Has it dimmed now? I could only make out that there was something there- even averted vision wasn’t clear what but if it was brighter than the 2 other stars near it then I might have detected it’s photons On the plus side while locating it, isn’t Almach a beautiful double! Rivalling Albireo for colour but nice difference in sizes and low altitude giving them a pleasing fireyness
  12. Sony IMX294 4/3 CMOS Sensor Extremely low read noise - 1.2e @30db gain 14Bit ADC - provides real 14bit dynamic range Electronic shutter - no issues with vibrations sometimes found in mechanical shutters USB3.0 Port (back compatible with USB2.0) - 16fps@4144×2822 AR coated protective window - all light can pass Compatible with Windows / Mac OS / Linux LIKE NEW £825 FLO price with delivery is £1,022.95 ill pay shipping getting ASI6200mc Pro why I'm selling camera is perfect. The camera will be shipped in box with all the extras
  13. - Very small secondary and no secondary supports so very low diffraction. - 30% the coma that a normal newtonian has. - A "niche" design so expensive and made to high quality. Despite all that, I don't have one now. I went for a refractor instead
  14. Hi John, what makes a mak newt like that a better planetary scope than a regular newt? It’s quite a “fast” scope which isn’t normally associated with being a planet killer? I understand that mak newts have lower (possibly zero?) coma- an advantage in a faster scope and it seems to have a smaller secondary so better contrast (why can it have a smaller secondary?) And no spider so no diffraction spikes- is that an advantage for the planets? Or is it just that it’s easier to make a more perfect spherical primary? But then the lens has to be good too. Just wondering
  15. I've just got a bit of clear sky to work on my ASC, I'm using a RPi for the first time and it seems to be working fine using this software, dead easy to set up, but a little harder to test: - https://github.com/thomasjacquin/allsky I'll let you all know if it works
  16. Hi kev Thanks for your reply, your findings are exactly the same as mine. I would love to know what thread size telescope express use on the orange upgrade counterweight shaft and collar they produce?
  17. Looked out the window before going to bed and saw the moon peeking out between the clouds so quickly set up the scope. Despite being a full moon could see quite a bit of detail and the image was nice and sharp. Got the smartphone ready and managed to take a couple of shots before the clouds ruined everything. Oh well better than nothing and no time to adjust the settings properly but still not too bad and CA was not a problem. Loking forward to taking some proper pics another night.
  18. Got no joy in another node so posting here... Hi there, I sold my Neximage 5 a while back and am in the market for a planetary camera to use with my C11 XLT. As far as my limited knowledge and ability to research goes I think the Altair GPCAM3 385c Colour might be the best bang for buck due to the high framerate. I was also recommended the following 2x Barlow (Altair Lightwave 2x Flat Field Tele Extender Barlow) as an ideal Barlow to accompany the 385c. The two should cost in the region of £400. Without getting into crazy money can anyone recommend a better option than this or does this look about right for the 11" C11 XLT and planets? Aside from an ADC are there any other filters or accessories I should purchase to maximise on the poor seeing and low altitude of the planets at 53 degrees North?
  19. I'll have the 4mm pleased if still available. If you want to pm me with your payment details we can sort out the rest of it. Thanks, Paul
  20. I reckon this might beat it (just about) https://www.astrobuysell.com/uk/propview.php?view=162161 I used to have the 6 inch version - it was a brilliant planetary scope.
  21. I think that's the way I'll be going when I finally get my telescope
  22. Regarding my recent full spectrum mod. Will I need a use a filter no matter the conditions or can I shoot the same as before?
  23. That was literally how i started astrophotography. later upgraded from my hands and a smartphone to a DSLR and telescope adaptor. awesome pic of the moon you got there too! well done May the Force be with you.
  24. Really?! That would mean I could capture 23 pixel long jet at bin 2. Are you sure it's that long? We're talking about an object 2.5 billion light years away.
  25. Awesome! welcome to the weird, wacky and amazing world of Astronomy! happy stargazing!!! May the Force be with you.
  26. Yesterday
  27. I originally used the Vegemite lids to allow adjustment of the front etalon tilt from the eyepiece. The knurled edge of the lid "matched" the knurled adjuster on the SM60. The hand lid now replaced by a SW motor. Majic! I also use a Vegemite lid on the PST, as you say, to give finer control - works well (also on SCT focusers)
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