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riklaunim

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About riklaunim

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    Abathur

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    http://www.rkblog.rk.edu.pl

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  • Gender
    Male
  • Location
    Poland
  1. Started imaging like a week ago but due to weather or Moon could not finish it, only 20 frames (60s if I recall correctly), Svbony UHC, RedCat 51, ToupTek ATR3-16000 color camera. Full frame: link 2 x bin2: Crop on Hubble's Variable Nebula
  2. Venus show around 17:24 local time through few filters, only UV give any clear details. ASI178MM, 14" DK f/19. 1000nm longpass: Astrodon UVenus: UV-IR,IR,UV (UV as luminance to add contrast.. and noise): bin2:
  3. I've picked up a 60 mm Mak on a sale from Astroshop in like December and managed to do some testing, viewing with it. It's likely just a SkyWatcher rebrand but SW seems to not really offer less than 90mm Maks that often. At 77 EUR the price is very low for a telescope and it works - at low magnification you can see somewhat small but sharp Moon. On the other hand I had to collimate it and had some problems getting the correct defocused star image - and thus good quality of higher magnification views. For daytime use, as a finderscope for a bigger telescope or maybe even a guidescope it could work... Full review on my site: https://rk.edu.pl/en/mightmak-60-small-and-cheap-maksutov-telescope/
  4. Looking for Sky Watcher focuser for SCT/Mak - for compatibility with their motofocus. If anyone has a spare one I'm interested
  5. Raw Rosette stack: https://www.dropbox.com/s/07f5uj4azl9z4h7/roz.fit.zip?dl=0 Gradient removed in IRIS:
  6. It's somewhat in a big city, but on the edge and having only some buildings and then forests. I rarely had gradients, few times used IRIS to remove it, but that was with mono and CLS or narrowband filters The local neighborhood street lights are slightly below my balcony and they do glow directly quite a lot. That could be the more direct cause depending on sky region. With H-alpha filter I was able to catch Simeis 147 so the sky can't be that bad
  7. Got a break in the clouds so I've managed to get few more test shots from the new set - RedCat 51,ToupTek ATR3-16000 color camera, Baader Neodynium as the LP filter. 20 x 180s, even it's high in the sky still have some gradient: Rosette nebula was super hard to see. The stars were there but nebulosity became visible only at longer exposures (where as with mono camera and CLS or narrowband filter it was "detectable" even on ~sec exposures): The gradient is strong, I have to remove it as there is way more signal there: It's like one of the street lights below my balcony somehow directly reflecting of the telescope inner walls etc.
  8. I got a new setup ready and only a short opportunity for first tests, but still managed to find out I need a smaller counterweight ToupTek ATR3-16000 is a color cooled camera with same Panasonic sensor as ASI1600 (RisingCam on Aliexpress, also branded by ES, Astroshop and others). Crop, 10s x 200; Baader Neodymium Moon & SkyGlow: Imaging setup (- helical focuser): To have more fine focus on the RedCat 51 I used a very short non-rotating T2-T2 helical focuser from Teleskop Express. More info: https://rk.edu.pl/en/redcat-51-and-touptek-atr3-16000-kpa-lightweight-astrophotography/
  9. I got few astrophotography related books and checked what they offer and how modern they are. Books in question are: OpenSource Astrophotography 2.2: Your first low cost astro photo from your backyard; Karl Sarnow Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data; Gerald R. Hubbell The Astrophotography Manual: A Practical and Scientific Approach to Deep Sky Imaging; Chris Woodhouse Astrophotography; Thierry Legault Review: https://rk.edu.pl/en/quick-review-few-recent-astrophotography-books/
  10. I have few questions about the Panasonic and IMX294 big DS cameras. First of all - is anyone using Touptek/Rising Cam/Altair cameras with those two sensors? How do they perform and is the software/driver side stable? Do they work with FireCapture aside of ASCOM imaging apps? As for mono ASI1600 and alike cameras - do you get any pattern when trying to do a flat frame or lunar/solar imaging at very short exposure with high gain? (like 10-20ms with very high gain and then moving it lower)
  11. Long overdue telescope presentation: https://rk.edu.pl/en/showcasing-my-planetary-dall-kirkham-telescope/ Also note that I moved my site from rkblog.rk.edu.pl to just rk.edu.pl - with SSL and other improvements. Old links redirect to the new ones.
  12. If it works then ok. I prefer a laptop - with fast storage, not limited to Linux only and in fully working case and in EU the price will be higher too from vendor US price.
  13. Dedicated planetary telescopes aren't produced on such scales as your average fast Newtonian so the price gets higher. Add a low volume high quality small company and the price goes even high. f/12 is still good although the aperture could be bit bigger. f/20 can be problematic as planetary cameras get smaller and smaller pixels. There are some Sony big pixel sensors, but those are only in PGR cameras at the moment.
  14. Just note that GigE won't work at GigE throughput as it's limited by chip internal throughput (which is shared with USB and USB based WiF/BT). For a board to have USB3 or other desired connectors - the chip must implement it. Most of ARM chips is made for low power mobile or embedded use and things like USB3, SATA3, high throughput interfaces, PCIe aren't implemented. It's better to just use a simple x86 based PC with a low power CPU. It will cost bit more but it will provide desired features. Raspberry capable of handling USB3 planetary cameras with fast storage connector to a SSD with unhindered networking will require much newer and more expensive chip - and that's not the goal of this project. Recently I got two boards from Aliexpress: Blue one is $86 and green one was $90. Both have low power Intel "tablet" chips. Blue is ready to use with on-board RAM and eMMC, while green needs one DIMM of RAM and some storage - in this case mSATA SSD. But still a better option may to but a nettop (barebone) PC in a nice package.
  15. When you combine measurements into RGB you can also pick fourth measurement as luminescence (no matter what "channel" it was assigned).
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