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New to the subject

Postby Andy.Gardner.140350 » Sun Apr 12, 2015 8:54 pm

I have just purchased my first telescope after having an interest in astronomy for some time . I have a skywatcher Diameter: 130mm -Focal Length: 650mm -F/ratio: f/5 . It comes with 2 eye pieces a 25mm wide angle and a 10mm . I have read about the Barlow lens which I gather attaches to the eye piece . What eye pieces or Barlow lenses should I purchase if any
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Re: New to the subject

Postby dave.b » Tue Apr 14, 2015 10:08 pm

Get a zoom eye piece. Lots of fun zooming in on the moon's surface, the planets, and the Orion nebula to name but a few targets.

I started with the Celestron 8-24mm. I think this is still about £80 or so.
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Re: New to the subject

Postby Andy.Gardner.140350 » Fri Apr 17, 2015 9:02 pm

Thanks for the reply I shall get looking for one
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Re: New to the subject

Postby The Man with the Corrugated Iron Roof » Tue Apr 28, 2015 9:43 pm

Only issue with zoom eyepieces is that they usually introduce more chromatic aberration, unless they cost considerably more than your telescope. I use one for narrowband solar viewing where chromatic aberration isn't an issue.

I would consider a 2x or 3x Barlow lens and a 32mm focal length eyepiece. I also find the Cemax 12mm good for visual use on planets but it's not good for afocal imaging.
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Re: New to the subject

Postby dave.b » Sun May 03, 2015 11:26 pm

Phill,
I agree that there are trade offs, but the Celestron zoom EP isn't too bad for chromatic aberrations and it's a lot more fun for a beginner to use than a set of cheap plossls (which would cost more).

The zoom, as a first EP, then allows for consideration with what to subsequently get as a fixed focal length EP. And that typically means something with an AFV of 60deg or more.

Dave B.
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Re: New to the subject

Postby SkyWatcher17 » Mon May 04, 2015 2:57 pm

The 'TS-Optics Achromatic 2x Barlow Lens 1.25" for Starter telescopes' looks OK for around £15. It would double the magnification with the 10mm and 25mm EP's giving you a decent combination of magnifications.
Sky-Watcher Explorer 130M, EQ5 Deluxe, AZ5 Deluxe, SkyMax 102mm, SkyMax 127mm, Orion/SW ST80s (both modified), Vixen Porta II/Vixen SXG Hal-130, Orion 90mm StarMax , Celestron NexStar Evolution 9.25", TS Optics/GSO: SVD series 150mm, f/6.
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Re: New to the subject

Postby david48 » Mon May 25, 2015 7:40 pm

See again all the above posts are about equipment.

Not about actually observing.
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Re: New to the subject

Postby SkyWatcher17 » Mon May 25, 2015 7:59 pm

I have some Barlows, including a Celestron Omni, which I think is very good quality for the money. Good quality optics could potentially transform the performance of your telescope. The standard Sky-Watcher 10mm 'Super Plossl' and the 25mm 'Wide Angle' Kellner aren't bad starter eyepieces but I wasn't impressed with the Sky-Watcher 2x Barlow.

http://www.celestron.com/browse-shop/as ... arlow-lens
Sky-Watcher Explorer 130M, EQ5 Deluxe, AZ5 Deluxe, SkyMax 102mm, SkyMax 127mm, Orion/SW ST80s (both modified), Vixen Porta II/Vixen SXG Hal-130, Orion 90mm StarMax , Celestron NexStar Evolution 9.25", TS Optics/GSO: SVD series 150mm, f/6.
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Re: New to the subject

Postby SkyWatcher17 » Mon May 25, 2015 8:17 pm

david48 wrote:See again all the above posts are about equipment.

Not about actually observing.


To be fair, the OP did ask an equipment related question.
Sky-Watcher Explorer 130M, EQ5 Deluxe, AZ5 Deluxe, SkyMax 102mm, SkyMax 127mm, Orion/SW ST80s (both modified), Vixen Porta II/Vixen SXG Hal-130, Orion 90mm StarMax , Celestron NexStar Evolution 9.25", TS Optics/GSO: SVD series 150mm, f/6.
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Re: New to the subject

Postby david48 » Mon May 25, 2015 9:58 pm

SkyWatcher17 wrote:
david48 wrote:See again all the above posts are about equipment.

Not about actually observing.


To be fair, the OP did ask an equipment related question.


Well yes, that's the point I was making, nobody asks about astronomy on here, only about eyepieces
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