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geoflewis

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geoflewis last won the day on March 20 2016

geoflewis had the most liked content!

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About geoflewis

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    Norfolk
  1. Thanks Steve, Yep, I’m sure that I’ll try it again, but I will look for a night of excellent seeing to make it worthwhile. Geof
  2. Thanks Pete, Next time I’ll take Roger’s (Bizibilder) advice and use iMerge to monitor the frames captured on the fly to ensure sufficient overlap. I’ll also wait for excellent seeing to optimise the scope’s resolution. Geof
  3. geoflewis

    Mars 2014 - Then and now

    Hi Luke, yep, imaging Mars this year has mostly been a miserable experience for me too....!! Great image from 2014 though, so let's hope for more like that in 2020 . Cheers, Geof
  4. Thanks Wouter, I just looked and it is superb. Geof
  5. geoflewis

    Large moon mosaic. 100 megapixel

    Wouter, it is a superb image, very well done. Geof
  6. Thanks Wouter, I appreciate the kind feedback and encouragement to try it again, which I will almost certainly do. I will also wait to try on a night when the seeing is excellent so that the finest details may be resolved. Where may I see your 48 panel mosaic please? Regards, Geof
  7. I moved to south Norfok 2.5 years ago for better skies than I experienced in suburban, light polluted skies on the Surrey/Hants border. I now live in a rural Bortle 4 location with no local street lights, that gives me 21.3SQM skies, with the Milky Way very prominent on clear moonless nights, however, with the UK weather those nights sadly remain pretty rare...
  8. Hi Roger, Thanks very much for that info. I did compile the final image with iMerge, but I only downloaded that after I found that ICE wouldn't automaticaly build the image due to the missing sections. I saw that there is an option to use videos, but didn't realise that you could do that on the fly to check that sufficient overlap had been allowed. That is a great feature which I will certainly use next time I try a full Moon mosaic. Cheers, Geof
  9. Thanks John, much appreciated. Geof
  10. Thanks Vlaiv, It's a high res jpeg, so already compressed, but SGL doesn't appear to be saving at full resolution. I built it using bmp images and the final image is 276Mb, so not sure if I should even try to upload that, but here goes..... MoonMosaicSept2018v4.bmp The above bmp file will take several minutes to download, but I have also replaced the original image with a higher res jpeg. Geof
  11. Thanks Charl, I appreciate the kind feedback. It was something of a labour of love and I was hoping for a complete high res image that I could print as wall poster. The difficulty of trying to patch is that not only do the shadows change, but also the Moon's libration likely would result in perspective errors, but given how small the missing sections are, I will probably give it a try... Cheers, Geof
  12. Well I last tried this some 4 years ago, but clearly haven't learned my lessons....!! My October 2014 attempt was full of huge holes despite using a scope/camera (10" Meade SCT/DBK21AU.04) comination that gave a significantly larger FOV per frame and used a mere 70 videos, so what was I thinking trying again with the smaller FOV of my C14 + ASI120MM-s...!! I took great care (well I tried to anyway) to allow margin overlaps as I move systematically across the lunar surface shooting some 121 videos over an elapsed time of 2.75 hours. I started shooting videos of 2000 frames, but halfway through realised that I would run out of disc space so reduced to 1000 frames per video, even then capturing in excess of 160Gb data. Each video was processed in autostakkert (AS3!) selecting best 200 frames, then sharpened with wavelets in Registax before taking into PS for final tweaks and cropping edge artefacts. Last the individual frames were stitched together one by one in iMerge to produce the final high resolution image...... Damn that was close, BUT no cigar...., maybe it will be 3rd time lucky, if I ever try this endeavour again.... If you can ignore the obvious missing sections, please click on the image to open a high resultion version which shows the level of detail possible with the C14 and ASI120, revealing craters and other surface features down to approx 3km diameter. Cheers, Geof
  13. geoflewis

    I didn't know space was so cool!

    Yep, it works nicely for very wide field views of the Veil with my cheaper 1.25" eyepieces and the 4" APO, but of course the light gathering power of the C14 is what I want to use more.....
  14. geoflewis

    I didn't know space was so cool!

    Thanks Neil, I did find the excellent linked report earlier this year and it was instumental in me choosing the UHC as my first 2" filter, but from what I learned at Kelling Heath last week from experienced observers, my choice of the ES filter might not have been the best decision, as I'm told the bandwidth is too great. Still it's given me some great views that I never got with no filter so now by adding the Astronomik OIII to my tool kit, I should have a lot of fun comparing and contrasting the views. I had forgotten, but subsequently recalled then found my original Lumicon 1.25" OIII, so that has given me an insight as to the improved views of the Veil in particular. Geof
  15. My home at Frimley was more 16-18, not sure I ever saw 19, though we did observe from Alice Holt Forest south of Farnham, which maybe was slightly darker. Certainly visual observing of anything other than bright targets was sorely compromised, with even M42, bathed as it was in orange Aldershot LP, a pale shadow of what I now see from Norfolk. Thanks for the advice on the 55mm, definitely something to keep in mind.
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