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ianaiken

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ianaiken last won the day on December 11 2015

ianaiken had the most liked content!

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    https://www.flickr.com/photos/ianaiken/

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    Astrophotography, Motorbiking, Cycling
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    North East England

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  1. I'd have said Ice or condensation but the temps you've stated it cannot be ice, but maybe condensation you are quite far below ambient. What's the dew point? But, maybe it's something from your flats?
  2. You are making me so jealous. I have a set of the highspeed ultra narrowband and it's raining and cloudy. I'm dying for some decent skies to start to work on a decent picture. Excellent results, is this with RASA11?
  3. With my RASA I always get some form of halo no matter which filter I use, this is due to SCT design and cannot be avoided. Different optical systems will yield different results. I get halos with my IDAS LP filter when used with CMOS OSC , and I can show some examples of halos on L-Enhance and L-Extreme. I used to have Chromas in my previous setup, and even those can suffer halos too. See the linked thread for the issues I read on Chromas. So for me it's performance at a price point that doesn’t kill the bank. I’ll be posting some test images from the high speed UNB’s once it gets a bit darker here and clear.
  4. Awesome! I'm glad I cam across your thread by change as I was searching for UFC info. Glad to have helped.
  5. I think the top of your filter should look like this.... so there is definitely something not right there. (I found this image on the internet)
  6. I know this might sound daft, but is the filter screwed into the holder? On your first picture it looks like there are threads on the top of the filter however the writing is the correct way. Maybe you've not got something screwed into the filter by mistake?
  7. There is something not quite right was this brand new out of the box? I couldn't see in the video the problem but I guess a stiff spot would be hard to see it's more something you feel. Mine have been smooth. They are adjustable it depends where and how big the stiff spot is, again hard to see in the video.
  8. Mine is flexible too but the t-shirt is lightweight enough it doesn't really move. Can you not run some wood down the inside to give it more support? Or invest in a carbon Fibre or I think you can also get proper remote operated closure fins I found this on the new filter system https://www.baader-planetarium.com/en/blog/rasa-8-extreme-images-michael-jaeger-with-ccd-camera-f2-highspeed-filter/ and its called the Baader FCCT (Filter changer camera tilter). I think this is the solution for the RASA 8" filter situation. I knew I had seen something more than just Facebook.
  9. Hi Tony, does the Varilock spacer fits between the filter drawer and the camera? I just leave the dew shield on and throw a t shirt over the end it can be left on for months which also saves me doing flats that frequently. The simple things 🙂
  10. I was looking into the RASA 8 as a portable setup in the field with my caravan. As far as I know this is a known problem with the UFC due to the small backfocus and looks like you've got a good solution, at least for mounting the filters but I suspect you will still have problems with collimating as you will need to remove the camera to access collimation screws? Removing the camera to collimate will mean you are back to square one most likely. I saw on Facebook in one of the many groups, that Baader are working on a solution for this due early 2020. From what I can gather is the new product will be a filter changer system with a built in tilt adjuster with adjustments on the side so it can be collimated without the need of removing the camera etc... This would be ideal for the RASA 8" It sounds like this may be the solution to deal with the 28mm backfocus of the RASA 8". I've got the 2inch Baader high speed filters already for my Hyperstar C11 but this never gets removed from the Observatory for the field, so this new changer could be ideal.
  11. hi ian just putting the feelers out what is the absolute minimum for scope and reducer,still waiting for the esprit 100 to be available ,thanks ian

  12. 2018 I was not busy at all with Astro Imaging it seems. Two images the whole year! IC5070 Bicolour taken with C11 and Hyperstar with Baader Highspeed Filters 9 Pane Mosaic Sadr Region/NGC6888 taken with C11 and Hyperstar with Baader Highspeed Filters
  13. Haha yes I didn't notice there was a little hand there at the time obviously oblivious to my parental duties :-)
  14. Mine have changed a bit. Now have a ts 100q apo and starwave 152 achro (next to my c11)
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