How to Choose A Barlow Lens - Orion Telescopes and Binoculars

http://www.telescope.com In this video we look at some of the different features and function of Barlow lenses and how one type of Barlow may be better suited for your particular need!

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[fgbaz]

We have already found a you tube link on showing how to set the mirrors up on the reflector scope, so is our next stage, but views on the adapter 'ERECTING EYE PIECE' would be greatly appreaited, cheers andrew

[oriontelescopes]

Hi Fgbaz,

A reflector telescope has a rotated image – usually almost straight upside down depending on how your head is oriented to the tube. The Erecting Eyepiece is meant to give you an upright image. Just a word of warning though – I’ve never seen an erecting eyepiece on a reflector that didn’t cause fairly soft fuzzy images, so you might be better off not using it. In the night sky, having an upside down image really doesn’t matter so much.

Thanks!

-Ken

Orion Telescopes

[Bregond90]

@oriontelescopes Hi great straight forward video man.

I'm a telescope noob, so what barlow lens would suit my celestron 130 along with their stock 10 mm eye piece, as I found the magnification quite poor.

[oriontelescopes]

Hi Bregond90,

I would suggest our #8711 Shorty Barlow, to double the power of that telescope and eyepiece combination. I can’t post a link into these responses, but if you go to our website and enter 8711 into the search field, the Barlow should pop right up.

Thanks!

-Ken

Orion Telescopes

[JamachStarcraft]

hi , i have a reflecting mirror telescope and i have a 2x barlow as my most magnofide and and 6mm eyepiece as my most magnifide. im trying to find something that will help me with farther objects in space. (i can see jupiter as a bout 3/4 the size of a dime at my most magnifide)

[oriontelescopes]

Hi JamachStarcraft,

I’m not sure which telescope you have, so I don’t know your exact magnification, but it sounds like you’re fairly close to the maximum possible magnification with a 6mm and barlow. Planets are always small objects in the field of view, but you should see nice details at that power. A general rule of thumb for the max magnification is 2x the scope diameter in millimeters (50x in inches).

Thanks!

-Ken

Orion Telescopes

[fgbaz]

hi, my step dad has just been given a 76x700 telescope, his 1st, getting to grips slowly. We understand the barlow operation, but with this telescope came a lens which seats in the same place as a barlow lens, on the side it says 'ERECTING EYE PIECE', we are trying to find out what this is used for.

If you look through this 'erecting eye piece' on its own,(not fitted to the telescope) the views are all upside down.

So was wandering if anyone can shed some light as to what this is used for ?

[JamachStarcraft]

i have a refelecting telescope and my highest barlow is 2x and my best lens is 6mm , i can see jupiter about a little smaller than the size of a dime, what would you recomend to help me see farther objects more clearly? thanks in advance. btw im a begginer

[laney50w]

Thanks for all your informative videos! Would love to see some in-depth videos on O-III, H-Beta, and UHC filters!

[TheStarWatchingRock]

Thanks for the info! I'll have to look into a 2.5x or 5x five-element Barlow for planetary, lunar and (with the Venus transit next June) solar imaging. My current 3x has too high a level of chromatic aberration.