Tuesday, January 01, 2013

Celestron Firstscope



I treated myself to one of these for Christmas!

A few weeks ago I borrowed one of these to see for myself how this tiny Newtonian would perform. The one I borrowed was the SkyWatcher Firstscope, but it is identical apart from the external markings. I was so pleased with it that I decided to have one myself.

There are times when I like to be able to look at objects without having to set up my Skywatcher 80ED Pro or Skywatcher 130m. They are so big and bulky when you just want to have a quick look. The Celestron Firstscope ticks all the boxes, it is a small compact Dobsonian and folds
 neatly. It takes up little space and is a tabletop telescope that sits nicely on my windowsill to view the Moon from my bedroom without even going outside!


It is not really suitable for Astro-Imaging as the focal length is very short and I can't even get the Philips Toucam to reach focus with the focus unit. I can with a barlow lens fitted, but then the focus is not sharp enough.

I use my own set of Plossl eyepieces which are much better than the ones supplied by Celestron, although, the Skywatcher version supplies much better eyepieces and also a viewfinder. I decided to go for the Celestron because it was only £39 and I already had my own viewfinder and eyepieces. I find that the 25mm eyepiece works the best. The Skywatcher version costs around £55.

Celestron FirstScope Telescope - General Features
  • High quality Dobsonian style stand with a 76 mm reflector optical tube make FirstScope an ideal entry level astronomical telescope.
  • Portable and lighweight table-top design makes it easy to store, transport and setup your FirstScope Telescope
  • FirstScope is very easy to observe with, the user simply navigates the night sky by moving the tube in the direction of their desired object.
  • Stylish and decorative design makes FirstScope a wonderful keepsake for anyone interested in astronomy.

Specifications

Optical Design : Dobsonian Reflector
Aperture : 76 mm (2.99 in)
Focal Length : 300 mm (11.81 in)
Focal Ratio : 3.95
Eyepiece 20 mm
Magnification 1 : 15 x
Eyepiece 4 mm
Magnification 2 : 75 x
Weight : 1956.12

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