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ncjunk

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About ncjunk

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    Brown Dwarf

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    http://www.neilchase.net/

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    Northern Spain

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  1. I haven´t been here for ages, it´s lovely to see all of the Arduino and Raspberry pi design Your threads are always so wonderfully detailed.
  2. Hi, My C11 is a bit heavy at the imaging train end and I need to add some weight to the end to shift the center of balance. Does anyone know what weights are available and what they are called? It has lots of handy holes at the end of the tube for attaching things and I´m sure I´ve seen tube shaped weights somewhere. thanks,
  3. I have two focusers one with a gear and one without and they both work fine. Personally I prefer the geared stepper though as I have 32000 steps to play with on the range of travel of the focuser. With the non geared stepper I have 200 steps x 8 (microstepping steps) = 1600 per revolution if I remember correctly I use about 5000 steps for the range of travel of the focuser. I use the non geared on an ED80 and the geared on a C11. The most critical thing with the focuser is to ensure everything is tight and your coupling is solid. Any slack in the system will add t
  4. I also keep mine running 24/7 and use the cloud sensor to see what I missed during the night. The PC keeps itself dry that way. Does get hot in the summer but when I bought it of off ebay I bought two of them (cheap old dells 35 pounds each) and have the backup in the garage for when the first breaks.
  5. Very nice NGC891! I like this Galaxy it´s one of my favourites, I like the dust lanes.
  6. I feel you were a bit harsh but then I understand the frustration as I have some code that only works up to a certain version of arduino software - must fix that someday. BUT - in the 80s it cost a fortune to buy and build anything. I remember being at home looking through my maplins catalogue in order to see what was new and drooling over the 6800 processor and wanting to play but it being too expensive. I can now buy, and have, an arduino that fits in my wallet for the price of a packet of crisps with 8 AI and 8 AI, inbuilt serial comms, low power consumption etc etc.....seriously
  7. To be honest it won't be very challenging for you Gina! It's relatively easy and you'd have it sorted in between breakfast and mid morning tea ;-D
  8. There are some datasheets here for the sensor: https://www.sparkfun.com/products/9570
  9. The IR cloud sensor detects sky temperature and when it is clear it will read -30ish and when cloudy it will read the temperature of the clouds, I assume it will be reflecting a certain amount of heat that would normally rise and hence detects that or reads the temperature of the clouds (probably a mix of the two). It cloudy conditions the temp will read 12 deg. You could use the MLX90614 sensor and they come with 45 deg views or 60 deg view - you need to check the wavelength of ir it detects i think it's 5-14 wavelength range. The only problem I have is dew as I've never been good a
  10. I had a cloud sensor working with the MLX90614, i think, IR sensor and it does work very very. You need a decent rain sensor with inbuilt heater as well and this can provide the heat to keep the dew off of it. My sensor died because the test case wasn´t waterproof and the electronics got wet. I moved to the AAG cloud watcher as I don´t have time to redo the homemade one or integrate it into ACP and the AAG does it all for 300 euros and was effectively the same hardware that i bought for mine. The IR sensor is very easy and you are only looking for the temp difference between ambient
  11. Maxim dl however i don't do much processing just levels and curves as i dont have time. I prefer maxim for combining and then photoshop XI that i got free with my nikon D50. But these were just maxim.
  12. I'd definately start with an M13, M3 or M27. M27 is a good, bright, fairly large target which would be a great starting point for practicing. I'm just blatently copying ollys post aren't I?
  13. I have to be honest here I have rather a good mount so it's easy to guide. I had the c11 on an eq6 once a few years ago now that was entertaining. I always think these people who produce stunning images on low end gear are the true masters of astrophotography.
  14. You're in the north as well, Its too hot for me today but the great thing is i get clear nights. Winter is not a good time as i get continuous cloud off of the Atlantic. Off down the beach when it cools off a bit ;-D
  15. To apply i lifted one end of the backing paper by 20cm and attached the flocking removing the air bubbles. I then slowly pulled off the backing paper whilst rolling the flocking.
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