New Barlow

[D Wright]

I just received my new Barlow in the post this morning, I can't wait to try it. It is a Revelation Astro 2.25x triplet APO and judging from the quality of their eyepieces it should be pretty darn good. I have been using a standard Skywatcher Barlow and while not bad I felt the need for something better. I can't sing the praises for this company enough as the quality of their equipment is outstanding for the price. Does anyone else use their stuff?

[John]

I owned one of the Revelation triplet barlows but I thought they were 2.5x

They do perform pretty well for their price. I think "apo" is pushing it a bit though it does have 3 lenses in it.

[xtreemchaos]

yer mate, i have there 2in 2x ed barlow lovely bit of kit, and for £32 you cant go wrong.  clear skys charl.

[D Wright]

I only quoted APO as that is what the web site description said. I bought it from Harrison Telescopes and I have found them to be honest and knowledgeable. I am not sure how to tell if it is APO but will let you know how it performs when weather allows

[D Wright]

Once I get some 2" EPs I am going to get the 2" Barlow from them. I am thinking about their 2" 50mm EP

[laudropb]

I have this Barlow and it is very good. I do not think you will be disappointed with it.

[John]

Once I get some 2" EPs I am going to get the 2" Barlow from them. I am thinking about their 2" 50mm EP

The 50mm eyepiece won't be too effective with your GX250 I feel newtonian because the exit pupil that it creates is a massive 10.4mm which is larger than the maximum dilated pupil size of your eye. With an F/4.8 scope I think a 30mm eyepiece is a better choice of maximum focal length eyepiece.

[D Wright]

Ok thanks for that. They do a 2" 30mm as well so may go for that. Will I notice much difference between a 2" 30mm and a 1.25" 32mm?

Apologies the Barlow is 2.5x

[John]

Ok thanks for that. They do a 2" 30mm as well so may go for that. Will I notice much difference between a 2" 30mm and a 1.25" 32mm?

Apologies the Barlow is 2.5x

The difference will be that the 30mm 2" will show a true field of view of 1.7 degrees with your 250mm newtonian wheras the 32mm will show 1.33 degrees.

The 30mm Revelation may well show astigmatism (seagull shaped stars) in the outer parts of the field of view because your 250mm newtonian is quite a fast scope - F/4.8 I believe ?

[ronl]

I have the same Barlow 2.5 Revelation, it's a very nice piece of kit, and a 

huge improvement over the Skywatcher Barlow, hope you enjoy it.

[Grotemobile]

yer mate, i have there 2in 2x ed barlow lovely bit of kit, and for £32 you cant go wrong.  clear skys charl.

I will second that . U can unscrew the

end & put it onto your EP, then it gives U

1.5x.

Steve.

[Davey-T]

I have a 2" 30mm Revelation eyepiece and it's pretty good for a "cheap" eyepiece 70 degree FOV but I haven't used it in anything very demanding, not quite up to the standard of the TV T5 31mm 

Dave

[triton1]

Someone had to mention the "Holy hand grenade"

[triton1]

Sorry lost the plot there I also have one of their 2 inch ed barlows there great for the price,probably the same as the SW ones but a lot cheaper.

[michael.h.f.wilkinson]

Someone had to mention the "Holy hand grenade"

I prefer the moniker "Panzerfaust" for my 31T5

[wasteland]

I prefer the moniker "Panzerfaust" for my 31T5

Reductio ad Panzerfaustum as a general rule for SGL's threads? 

[michael.h.f.wilkinson]

Reductio ad Panzerfaustum as a general rule for SGL's threads? 

Not general. Just for EP threads, perhaps?