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SilverAstro

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SilverAstro last won the day on April 12 2018

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  1. replay https://youtu.be/TUcexxpArog
  2. I must admit to a little chuckle at the bit in the description "and irreversible damage to the eyes " shirly they mean eye -singular? one would still have a spare with which to investigate what went wrong the first time ? Or is there going to be a bino viewer in a bundle? ok hat&coat Now has been changed to the singular, but no "ho ho ho" here, oh well
  3. That is such really good news, it was so illuminating back then to read his blog, so sad when he departed. Well done, thank you.
  4. And looks like you neatly caught the Lunar X and V being discussed over THERE Nice one !
  5. Ah yes ok, I see that I tried to cover too much all in one go, but as it had been a few hours 'hanging' I tried to cover various So 'Dual-Speed 2” Crayford Focuser ' is the bit to take advice on to be able to use your 1.25" kit then. You wouldnt need the star diagonal for the camera but would need an equivalent extension I suppose.
  6. I guess your DSLR T-ring/adapter? is 1.25" so you will need a 2" to 1.25" adapter, I think. ( I have not yet done anything yet in that line with my DSLR.) or a 2" T jobbie. Skywatcher adverts like to talk about "light gathering", so in like style :- this will gather about 1/4 *of the light of your Explorer if it is the 130, or about 1/9th * the light of the Explorer 200. Photographing galaxies is doable but will need very approx. 4x longer exposures (or equivalent more subs to stack) than an Explorer130. Visually it will not show you many more galaxies than your average binoculars, 50mm vs. this at 70mm. What it will do is show you what it can see with excellent clatrity, we hope (that is a tremendous simplification ! think of it as a HiFi 70mm glass) Your eyepieces will work but you will need a 2" to 1.25" adapter and a star diagonal (or the other way round). Perhaps ! Me no expert, an expert should be here soon Edit * 75% less and 90% less light than
  7. actually, you were not far off, peeps have been known to fit copper foil/shim 'fingers'/tabs into the back of the sensor and extend out to a cooler, , , but that is a whole other topic ! very clever peeps.
  8. Sorry, I was being a bit careless/fancyfull , old time phrase - to pay a skilled journeyman to do a proper job, an expression from days of yore when pans had copper bottoms.
  9. Juan says "Camera modification: £55", so I'd be inclined to spend that £60 you just saved on the Baader to pay a man to copper bottom it. ?
  10. He nearly 'did for' one of his eyes so you know what to wear ! Some call it luck, some call it skill ! The number of fails I read about I think you need to be prepared to face the £loss of bricking your camera if it all goes horribly wrong.
  11. Thanks for the confirmation, yes, that was my dilemma I have been up and down his pages to make sure it was not my eyes (or dyslexica!) all very odd. Could there be two Baader mods / filters, cos someone posted earlier about it being a clear glass whereas I thought it (singular?) was for daylight colour balance, with a bit of residual/extra IR cut as well I wonder? If that latter were the case then for astro only use we would be better off without it ?? my head hurts !
  12. Me muchly confussled as well ! Until this topic I thought I knew what I wanted, now I am not so sure, thanks y'all ! Ref the above pic, in that Juan is saying "ASTRO modified for astronomical use" on the top one, and on the lower he is saying "BAADER modified for astronomical use". In his other ads for other models he says "BAADER modified for astronomical use and daylight photography " which made me think that the Baader mod used a colour correction glass 'filter' to thus not need a custom white balance -but otherwise not needed for your astro only requirement-
  13. True, but I am conflicted on this junk / novelty aspect. Every satellite needs, now, to have an end of life plan. Usually to de-orbit and burn up. So by rights the final burn should have been to lower perigee to cause the no longer needed dummy load to return to Earth, not to raise its apogee to 'out there' ???
  14. which precise computer control of simultaneous firings makes one's thoughts turn to conspiracy theory - did they really mean to shoot for the asteroid belt after all, hehee ! Time for another coffee
  15. Thanks. Yep, needed a bit more than the ZX81 they used for the moon landings and after all that they came back within seconds / inches of each other !
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