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About Hoshikomi

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  1. Hoshikomi

    Thinking of Trying Solar Imaging...

    Everyone - Thanks for the advice. FLO now has an order for the Baader Solar Filter, so I'll start with that and work up to the Ha. Sorry about ruining your summers! Geoff
  2. I've been deep-sky imaging for a few years now and have always had an urge to try solar, but have been reluctant to start because: 1. Not sure what's needed. 2. Whenever I get something for the 'scope, clouds roll-in and I don't want the guilt of ruining everyone's summer. Notwithstanding #2, if I want to take visible light images with my Esprit 120 and DMK camera, am I correct in assuming all I need is a solar filter for the front? If I want to image in Ha, do I need a solar Ha filter? (Stephen suggests standard ones aren't up to it here) Thanks Geoff
  3. Wonderful images. What were the exposure times and number of sub-frames?
  4. Hope you don't mind, but I ran GradientXterminator over it (nothing fancy, just quick and dirty )
  5. Thanks to all. All I need now is some clear nights... Geoff Sent using Tapatalk
  6. I was hoping to experiment with this, but as usable clear nights this winter have been in single figures, I've opted to ask the experts. To keep it simple, let's say we have 3 (identical) clear nights with 3 hours of imaging available each night and I want to capture a single target. 1. Is it best to do one night of R, one night of G and one of B, or 2. One hour if R, one of G and one B each night? If we go for option 2, should I: a. Stack all the Rs Gs and Bs individually and then combine, or b. Stack each night's RGBs and then combine the 3 composites? Thanks Geoff Sent using Tapatalk
  7. Hoshikomi


    It's good on phones as it reformats the screen to fit your device, but it's fairly unnecessary on a tablet
  8. Hoshikomi

    EQMOD for Dummies

    I use a Plugable powered USB hub (http://www.amazon.co.uk/Plugable-Port-Power-Adapter-Mains/dp/B006Z061HU/ref=sr_1_2?ie=UTF8&qid=1385642762&sr=8-2&keywords=usb+hub) and a 10m active extension cable (http://www.amazon.co.uk/Plugable-Meter-Active-Extension-Female/dp/B004AGX4YO/ref=sr_1_31?s=computers&ie=UTF8&qid=1385642836&sr=1-31&keywords=Plugable+Technologies) and it works like a charm. I also use Starry Night Pro, but I set to run as an Administrator (same with PHD)
  9. Would you need moonlight? Presumably using a grey card in sunlight would allow you to calculate white balance (the light source is, after all, G2V!)
  10. Derek Wavelets are still fairly hit and miss for me. How do you go about setting the background to a flat plane? Thanks Geoff Sent using Tapatalk
  11. Hoshikomi

    Milky Way revisited

    Excellent image!! What lens did you use?
  12. Hoshikomi

    Old Jupiter Reprocessed

    This is a handy web page: http://www.skyandtelescope.com/observing/objects/planets/3304091.html?page=1&c=y Stick a date in and it'll tell you when the GRS appears. According to the site, the spot crossed the meridian at 2042, so I'd say you've captured it!! Cheers
  13. Specifically, removing the old spot. The guidance in the Catseye docs says use 91% Isopropyl alcohol, but ask in the chemists and they've stopped selling it as they think people just want to drink it; same with Acetone and nail varnish remover has oil in it to condition your nails... Does anyone have a solution (no pun intended!)? Geoff Sent using Tapatalk
  14. Have a look at Digital Blending. It's not an astro site, but the technique is the same and he explains it very well (and it may improve your landscape work ) Cheers
  15. OK. Went out tonight and checked the alignment with the Hotech; minor tweak to the secondary, but all the crosses lined up. Pointed at the moon to align the finderscope with the kit 25mm and focussed - it looked really sharp. Did a 2-star alignment and then tried a star-test on Betelgeuse unsing the kit 10mm. Firstly, the white (orange!) circle seemed to be a bit eliptical, but the inner circle was slightly off-centre so with the aid of my trusty assistant, we moved the primary until the circles appeared to be aligned. Once that was complete, I kept Betelgeuse central and tried to re-align the finder to discover I ran out of travel before I could get Betelgeuse in the cross-hairs. I popped the Hotech back in for a look and the cross was still centralised on the donut, but the reflected cross had disappeared off the target area. If I had any hair, I would be pulling it out by now! I still have a bad feeling about the secondary, but it looked OK yesterday; I have, however, never had that problem with the finder. Is it the eyepiece I used for the star test? I use the rig for imaging, so my eyepiece collection is fairly limited - I've got an 8mm Hyperion, but the rest is Barlows and the 2 Skywatcher kit eyepieces. Help!

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