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pipnina

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pipnina last won the day on March 26 2018

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About pipnina

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  1. It seems I never updated my profile when I got the imaging setup earlier this year, I'll have to edit that! I have a HEQ5-PRO and a 130-PDS with Baader Mk3 coma corrector that I currently use for photography. My 250PX sits on a dob and I use that for visual, though I've tried to get a few sneaky planet photos through it.
  2. Hi guys! I am hoping to move into proper astrocam imaging this winter and have been looking at the different options available. The Atik Horizon and ZWO ASI 1600MM-pro have caught my eye due to having fair sized sensors for the price, but which makes more sense to use? They both seem to have the same size sensor with the same pixel size, though the ZWO is cheaper in mono form than the Atik. I have heard that ZWO equipment can also be operated wirelessly with another attachment, which could make adding a guiding cam even more convenient if I got a ZWO + ZWO? My current camera is an old Nikon 3200, which has the same pixel scale as these cameras but a larger sensor. Would any reducing lens be useful to reduce the pixel scale some since I always binned my Nikon 2x2 anyway? Thanks
  3. ALMA can have a 16KM diameter with its movable telescopes. Perhaps I'm misunderstanding something or this video has overlooked it?
  4. Guiding is definitely something I need to look into! Thanks for reminding me. I suppose I could leave the mount itself outside between nights with a cover. But it being soft ground I do wonder if it might be at risk of shifting over time (I don't have a good concrete space to put it), also the risk of theft while mild given my area and the setup location always lingers in the mind. But I'll definitely look into those covers! If there isn't a good dedicated system for remote telescope control, maybe I could use a Raspberry PI to control the whole setup (Guiding/Mount movement/Camera) while the expensive computer sits safely indoors? Thanks for the response
  5. I always like seeing the brown dust around this nebula! A wonderful photo.
  6. Hello! I've been gone for a while but now that the dark nights are upon us again I have been thinking more and more about my dusty astrophotography setup, especially since my coworkers recently saw my previous astro pics and wanted more! Sadly the weather over the last month has not been welcoming but I hope to become ready for the winter and spring ahead! Currently I have a fairly simple HEQ5-PRO, Nikon 3200, and 130-PDS. I have been thinking about possible upgrades to this which would make it either out right better or easier to setup, but I felt I should ask for ideas from the experts! The first thing I want to change is to move to a proper astrocam. The Nikon has been a great and cheap way to get started but it just doesn't keep pace with the rest of the kit. The Atik Horizon CMOS seems like a good direct replacement as it has the same pixel scale as my Nikon and I'd not lose too much FOV from differences in resolution, while gaining the benefits of active cooling and mono+Ha sensitivity. But maybe for my 130-650 telescope a bigger pixel scale would make better use of my field? The other thing I must consider is setup time. Getting my HEQ5-PRO polar aligned and star aligned feels like a lengthy process with consulting the scope, then 3-star align, then scope again seemingly making no progress past 5". Is there any kit I could use to make this process less tedious? I have a laptop I can use to control the mount and camera with. But ideally I could control both remotely? I seem to always use my photography equipment in my back garden which is within wifi range. I have heard of wifi modules for these things but don't know how universal or practical they are... If I get the mono camera, I would want to get filters eventually, but I feel like I'd want to buy filter equipment once I am already comfortable with the astrocam so i don't think I'll buy any yet. What do you guys think? The choice and possibilities for equipment are vast and there is much to consider... Higher quality pictures of the universe are in my future I hope! Thanks
  7. My usual summer astro drought continues. In the last 4 months I've basically only had 1 look at Jupiter and Saturn.
    Sad, but the longer nights will come back soon and the garden is doing well in the mean time.

  8. Well, he already wants a tool shed. Maybe I can propose an "extension"
  9. If there were more clear nights, I'd be in very good shape by now. The HEQ5+Tripod+5Kg weight is something like 28KG to hug-lift, and a very awkward shape. An observatory would be a godsend, but I doubt my dad would let me ruin his garden.
  10. Hi guys, took this image last night of M101 but it is in dire need of some flats as you can see. What method do you guys use to take flats with the 130-PDS that minimises adding more tray light than you started with? last time I tried I got a gradient from one side of the image to the other...
  11. Can you remember the integration time of the DSLR/OSC/MONO images? It would help judge the difference in effectiveness.
  12. Something I believe Ollypenrice has said before is that OSC cameras have bayer matrices that have twice as many green pixels as blue and red, which is not useful for astronomy since most of the colours we try to capture are blue and red! And in filtered mono images, green is often the colour left with the least exposure, not the most. An OSC camera also makes emission line filters useless. OSC might be worth it for planetary imaging but I don't see much appeal beyond that personally.
  13. Good sky tonight :D Got the imaging scope pointed at flame/horse/2023, and had a look all around with the visual scope! Clusters in gemini/auriga, nebulae in orion (maybe a glimpse of flame). Saw the andromeda galaxy as well as 81/82. Hoped to find Uranus but no luck :( Too much pollution to navigate the area properly and finders frosted up.

    Hope the rest of you got lucky too!

  14. I think a healthy dose of narrow and wide shots make a happy amateur astronomer. Seeing the finer details of filament and mottling in the flame nebula can be just as stunning as seeing it in place with the horsehead, NGC2023, M78 and the brightest patch of the loop all in one image. Just stunning in different ways. I do agree with Olly though, you can gain a better appreciation of say the Pleiades when it's in an image that stretches all the way to the California nebula, and has the background dust and gas showing between them. You get some extra perspective like looking at an entire cathedral vs admiring a single stained glass window.
  15. I'm not an expert, but I might hazard that the Celsius scale has been redefined for simplicity at some point. It doesn't really perform any hard scientific logic to where the scale starts and ends (since the properties Celsius represents at either end of the scale vary depending on the environment!) and if we had determined some base for 0°k, which is far more important scientifically, the SI people may well have just decided to round Celsius off for simplicity. That's just a theory, but it may have some truth to it since as you say such round numbers are not common in physics. The closest thing I can find to support this is that the "triple point" of water is 273.16°k (0.01°c). Perhaps they set the Celsius scale to that end?
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