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Dave T

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About Dave T

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    Nebula

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  • Location
    Bristol UK
  1. Absolutely - totally up for that ! Do you think they would let me take my telescope & gear. Be the first person to image Earth from the red one Dave
  2. Hi guys, Thanks for the positive feedback. Makes me wanna get back out there for another dose of the cold stuff .... maybe less money on telescope gear and more on decent clothes ??? As I said the Andromeda image was taken with the 80ED but not with eyepiece projection but at prime focus. So optical chain was : 80ED + IDAS LPS + Baader IR cut + WO FF III + Canon 450D (self mod) So my effective focal length was 510mm and scope speed ~f/5.9, maybe a bit slower because of filter loss, say f/6.5 ??? Had a look back at the notes. Did 15 x 3min exposures and 5 x 3min darks. No bias or flats ...
  3. Hi Grumpy, I bought my 80ED scope specifically for doing deep sky imaging. I only had a crack at Jupiter because of the moon being soooo bright and limiting my long exposures - and obviously because it was something new and fun The 80ED is only 600mm so you have to be a bit carefull in terms of target selection. No point trying to image some tiny little galaxy that really requires ... something like that 10" LX200 ! But there are loads of really nice targets that are great for a slightly more widefield gear. Personally I like the widefield Nebula and large clusters. Also tracking at a sho
  4. My mistake Dave-Ryan ...... LX200 10" is 2500mm (thats a big fella)
  5. Hi Dave-Ryan, I am using eyepiece projection to give me the focal length I need to get a decent size image. On my ED80 I would say the camera CCD was about say 60mm from the 12.5mm eyepiece optics. So this gives me an amplification factor of (60 - 12.5) / 12.5 = 3.8 My scope effective focal length becomes ~ (600 x 3.8) = 2280mm So this is in excess of your LX200. But obviously you have a much larger aperture which I think i'm right in saying gives you a better ability to resolve detail. So I think we should get similar sized images but you'll get more detail for the same seeing conditions.
  6. Hi Dave-Ryan, Just about all the gear I have is in my signature I used the following gear : Skywatcher 80ED Pro HEQ-5 Pro mount Philips SPC900NC web-cam Baader 12.5mm Orthoscopic eyepiece Astro Eng AC646 projection adapter Baader IR cut filter Captured video using Sharpcap Stacked & aligned in Registax 5 Took 1 min of video at 5fps with minimum gain. I removed the mirror/star diagonal and replaced it with an extension tube. Used a Bahtinov mask to achieve focus on a bright star before slewing to Jupiter. It was alot of fun !!!!
  7. Hi all, Excellent, thanks for the feedback ! You are so right about the blue cast. Not worries Eary_uk thats exactly the type of feedback I was hoping for. Your modified (blue reduced version) is alot more pleasing on the eye. Did you achieve that in photoshop ? Which colour mixer did you use ? I was determined to have a crack at the image without first looking a alot of other images. Was concerned I might inadvertently copy the style of another image. Thanks .....
  8. Hi all, I am relatively new to astrophotography, this year in fact. I have spent my first night out attempting to image Jupiter. After some time actually getting the planet in my field of view I shot a series of one minute webcam video’s. I kept the gain and frame rate as low as possible to try and keep the noise down. Then used Registax 5 to align & stack. After that a little work in PS but nothing drastic. I simply used polar alignment and sidereal tracking, everything seemed fine in that Jupiter stayed put ! I was hoping for a spot of feedback and constructive criticism if p
  9. Hi Robin, thank you for considering the feature suggestion. I have the latest version and have been using the exposure period feature. A 'number of captures' and 'interval' operation would make the tool fit all jobs including time lapse imaging. In answer to bus_ter : what i do for tracking over very long intervals is use Jupiter as my autoguiding target instead of a star. Once locked Jupiter stays put doesn't have to be **** on as the video frames are going to be aligned anyhow. Cheers then, Dave
  10. Hi, have been using SharpCap for a few days now. Compliments to the chef, its great. A tool that works and is still easy to operate even when I can no longer feel my hands and feet for the cold. I have a feature suggestion. I like the ability to set the frame or time period for a capture. Would it also be possible to set the number of such captures and the period between them. I wanted to 'attempt' to create a Jupiter moon transit video and so need to capture about 32 sequences of about 1minute duration and 5minute intervals over a period of around 3hours. If such a feature existed I coul
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