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About Brinders

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    Proto Star

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  • Location
    Blackpool (53 degrees north)
  1. No one can hear you scream in space! So, I guess even there was no loud bang even if it did explode.
  2. That's the beauty of a Pentax - the sensor shakes at start up and can be made to shake as many times as necessary to get rid of any dust, plus it's weather and dust sealed in the first place. Rarely have any problems with dust! Brinders
  3. I remember I was able to get 60 second subs when I had my EQ6 Pro mount using only polar alignment. Brinders
  4. I have two of the TAL barlows and the lens element on both unscrew with ease. I tend to use the barrel of one of them with my Revelation Astro 2.5 x barlow and Celestron Neximage as an extender to increase the focal length slightly when imaging. It has been particularly useful when imaging Jupiter. Unfortunately, I cannot rate the optical quality of the lens element with the same enthusiasm of some; the revelation astro has proved to be far superior for similar money. Brinders
  5. Posidonius captured on February 17 2013 using a Celestron Neximage attached to a Celestron CPC 925 GPS using a 2.5x barlow. 853 frames stacked in Registax 6. Thanks for looking. Brinders
  6. Theophilus, Cyrillus & Catharina February 17th 2013 captured with a Celestron Neximage attached to a Celestron CPC 925 GPS and using a 2.5x barlow. 900 frames stacked in Registax 6 Thanks for looking, Brinders
  7. I have the 8mm Hyperion and, being a spectacle wearer, I love it because of its eye relief and wide field of view,which is very immersive. Recommended! Brinders
  8. Yes, i t was only on the regional news programme (Northwest Tonight), ahead of Stargazing Live, but my in addition to my photo being shown there was a brief discussion between two of the presenters on how I had captured the image. I was still being asked about it two weeks later by friends and work colleagues who had seen the programme - part of my 15 minutes of fame maybe! Brinders
  9. Thanks for the reply, Olly. Wanted to keep the price down - can't afford a Herschel wedge at the moment, so I think I'll go for the Baader solar film with my CPC 925. Brinders
  10. As the long time owner of a CPC925GPS, I would echo everything Brantuk says. I have a Neximage, but purchased some years ago when the price was more competitive. Nevertheless, it can give reasonable images of the brighter planets (Mars, Jupiter and Saturn) and the moon. Indeed, the BBC recently broadcast one of my Jupiter images taken using the Neximage CPC combo. Brinders
  11. After watching the latest edition of the The Sky at Night, I am considering using either of the above scopes with Baader solar film for white light solar imaging and observing, but which would be the best one to use? Brinders
  12. I have had two C9.25s. The first was an OTA mounted to a Skywatcher EQ6 Pro mount and the second is my present CPC 925 GPS. Because I have to set up and tear down each evening, I rather got fed up of the OTA on the EQ mount and, as I only do some planetary imaging, I found an EQ mount wasn't necessary. As to the C9.25, I have to say the second (i.e. CPC 925 GPS tube) is superior in both finish and, I believe, better optically than my first C9.25. The XTL coating is noticeably more even and the inside of the tube darker than the first. I also find it keeps collimation better. With either, i wouldn't like to go any bigger as I find the C9.25 weighty enough for one person to handle and as can be seen in my Jupiter, Lunar and other planetary images elsewhere on the forum, for me it gives decent enough images and I find the focal length sufficient for our atmospheric conditions. A larger, longer focal length OTA will mean increased time to reach equilibrium with ambient temperature and the increased focal length may actually give worse images in the prevailing atmospheric conditions I have to endure in my neck of the woods. So I am more than happy with the C9.25. If I need more focal length, I simply use my excellent Revelation Astro 2.5x apo barlow. Brinders
  13. A barlow won't give yo a larger view, but a magnified view by effectively doubling the focal length. Unfortunately, the trade off for increasing the focal length is a reduction in the light gathered and a narrower field of view. A telescope of say f10 with a focal length of 2000 mm becomes a f20 telescope with a focal length of 4000 mm if using a 2x barlow. If you want a wider view, you need to use an eyepiece with long focal length, say 32 mm. If you want a narrower but increased magnification then either a barlow or an eyepiece of shorter focal length (say 12 mm). The advantage of a barlow is that it will effectively double your eyepiece collection. So, if you have two eyepieces of say 32 mm & 12 mm focal length, by employing a barlow of say 2x magnification, you effectively have eyepieces of 16 mm & 6mm with the advantage (particularly if, like me, you wear glasses) of greater eye relief than using a shorter focal length eyepiece would offer. Brinders
  14. C Clouds here too for much of the time. I'd set my scope up at dusk when we had a clear sky. By the time I went out again after tea, the clouds had started rolling in. So much so that the northern hemisphere was captured looking through thin cloud. Bearing this in mind, the image has turned out better then I thought it would. Clouded in again here now, so no astronomy tonight Brinders
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