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Shibby

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Everything posted by Shibby

  1. I'm using a Nikon d70, supposedly the noise levels are good with the CCD over the CMOS used in Canons (plz someone correct me if I'm wrong here). But the software and firmware is terrible; very difficult to work around the automatic median filtering (I usually don't bother), also the only way for 30s+ exposures is using an IR remote. The pain involved here makes it no surprise to me the Canons are more popular.
  2. Hi, I'm in the same boat as you, so while I might be able to answer some of this, I'd also be interested in finding out the rest of it! Correct - lower magnification barlow means wider FOV and less loss of light. I use a 2x. That's exactly what I do - I've effectively moved the barlow lens as close as I can to the sensor, I end up with a FOV of about 0.7degrees (130mm/600mm F5 scope). I can't get much wider or I wouldn't be able to bring the camera to focus. I'd also like to know what barlow would be best quality for imaging; I'm currently using the standard 2x that came with my Skywatcher scope, but don't know how this compares to other barlows.
  3. It is quite faint! It does look quite comet-y, was the tail facing generally away from the sun, I wonder...
  4. Are you sure? I've looked it up on skymap.org and circled the exact position of the object on Catanonia's image. While there are some very faint background stars there, they don't look at all like what Catanonia has picked up. I do like a mystery...
  5. My solution to imaging is the same - a 2x barlow. One thing I can recommend if you wish to keep the magnification as low as possible, get that barlow lens as close as possible to the sensor - I managed to increase my FOV a little by doing this. Note the ends of barlows can usually be unscrewed. I was able to then screw it directly onto my T adapter. I don't know if there are negative side effects to doing this, but it seems to work ok for me.
  6. If it is out, I'm having serious trouble detecting that in your image! The stars look great for 2 minutes, did you use a polar scope to achieve the mount alignment? Very nice image, I must get around observing M27 at some point...
  7. Very nice indeed! I remember Hubble's stunning wide field image of the region and its looking like this is going to be just as stunning when you've got all the panels together (not that it isn't already!)
  8. Don't be disappointed! It's a fantastic image, you have really captured a sense of the variation in thickness of the gasses, and also the colour differences.
  9. Ah c'mon it's harmless. Telescopes come in various different colours - if you don't like this one, you don't have to buy it do you? They do cars in pink and there are people who buy them. My girlfriend loves her pink bass guitar. what's the difference? Granted, it's unusual with a telescope and this one probably doesn't look attractive to anyone other than kids, but still I don't think there's cause for offence.
  10. Hi Bob, nice one! Looks like we captured a comparable amount of detail. What length and how many subs did you use?
  11. It's the 650mm FL, but I've just replaced the mount with a used Vixen GP that I'm very happy with so far! I've placed the barlow as close as I can to the sensor but as you guessed, the FOV is quite narrow - it looks like about 0.7deg. I may not be able to capture for that much longer but hope be able to reduce the trailing I think (I kind of had to give up on the drift aligning in order to take any subs at all before the light returned).
  12. w.r.t. symbiosis, my favourite example is the Acacia. Some varieties grow their thorns into swollen ant homes. The ants then live on the tree and defend it from herbivores and neighbouring plants. The tree also feeds the ants by secreting nectar or little ant-sized packets of protein for them to eat.
  13. Don't forget that we constantly travel forwards through time! It's only sending information backwards that causes theoretical issues.
  14. I really do love these grand ambitious plans. It's a lovely vision and a great model for a civilisation; a planet powered by a large sun-gathering satellite. Whether something like this is feasible is another question, but kudos to the Shimizu Corporation for being brave enough to propose it.
  15. Cracking. There's a lot going on there!
  16. I'm still a newbie to all this; got out there on Thursday and spent most of the night getting set up and trying to drift align rather unsuccessfully! But I did eventually manage to take 12x90s subs before it started getting light - at only 2.30am! So this is an unguided 12x90s + 6 darks with 130P and unmodified Nikon D70 at ISO 800 +2x barlow. You can just make out IC 4263 on the RHS The image is pretty noisy so the close ups don't look good. Also, I had to use a bit of noise reduction which I can't say I like having to do. The tracking errors are also obvious and were pretty consistent throughout the subs. So I think with more time getting the hang of my drift alignment, I hope to take better quality and longer subs. Lewis
  17. I have one of the exact same lamps that's recently turned on. I always knew it would (I live on a new estate) but now it has, it's blinding and fills my entire garden with light I should nag the developers to fit one of those shields - looks ideal. I don't think the council have taken over responsibility of the streets/lamps yet as the site is still under development.
  18. Drift alignment is a method for accurately aligning an equatorial mount to the north/south pole, thus allowing accurate tracking of the sky as it rotates around the pole. As you have an Alt-Az mount, this method doesn't apply.
  19. Utter tosh. Putting aside all the reasons why the military wouldn't need to do that for a moment, that very short paragraph is so full of scientific holes you could use it to drain your vegetables. 1) As Steve says, Hubble is in *orbit* and therefore is is constant freefall - reorienting the satellite makes no difference whatsoever to the gravitational forces on the mirror. 2) "Many research organizations of note", yet of course they are not noted. 3) How would a "moon walk" help anything??
  20. Shibby

    M106

    martin, that's a great image containing detail I can only hope one day to capture (working on upping my sub length). So I hope you don't mind me having a play with the image, as practise for if I ever do. I've tried to increase the contrast in the centre to make the structure a bit more obvious, which I think it has done but it's definitely not as natural as your original.
  21. I saw something similar. It was bright and orange and passed straight overhead from SW to NE at around 11pm (surprised me as I'd literally only just stepped out the door). However, to me it didn't seem to be travelling in a perfectly straight line - it seemed to wobble a bit, which led me to guessing at a chinese lantern. However, if it was seen across the country maybe not - can satellite debris wobble as it re-enters? I'm based in Peterborough...
  22. Check out this page: Visual Comets in the Future (Northern Hemisphere) It details upcoming comets in the Northern Hemisphere. It predicts that R1 (McNaught) will reach Mag +2 in the mornings this June - we shall see!
  23. Ollie, Cornelius was saying you do *not* need to drill the tube.
  24. Hi Ollie, I'm very sorry about this - I honestly didn't realise it was a different type of mounting... I *think* you need something like this: Dovetail bars - Skywatcher Dovetail Mounting Plates Perhaps someone here can confirm that?
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