Category Archives: Filters

Ostara 1.25″ H-beta filter

Posted on September 25, 2018 by Reviewer

The Ostara 1.25″ H-beta filter is a specialist filter for CCD imaging and visual work of H-beta targets such as the horse head nebula and California nebula. Note that it is best used from dark sky locations, and ideally telescopes … Continue reading →

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Ostara 1.25″ O-III filter

Posted on February 8, 2018 by Reviewer

The Ostara O-III filter is a more specialised nebula filter compared to some other types. It is specifically for Planetary nebula such as M57, Dumbell and the Eskimo nebula , plus diffuse nebula such as the Swan and Veil.  From … Continue reading →

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Olivon 1.25″ #12 light yellow filter

Posted on March 30, 2017 by Reviewer

As always with coloured telescope filters, ask 10 people if they make a difference and you,ll get 10 different answers. From my point of view the #12 yellow is my favourite filter for Jupiter. It darkens the clouds against the … Continue reading →

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Ostara compact 1.25″ telescope eyepiece and filter set OS333763

Posted on February 17, 2017 by Reviewer

The Ostara 6 piece compact telescope eyepiece and filter set nicely bridges the gap between the budget sets and the £100+ options. In the kit you get three Ostara HR fully coated 1.25″ eyepieces with a sensible range of 5mm, … Continue reading →

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Baader 2″ UV / IR rejection filter #2459210

Posted on November 10, 2016 by Reviewer

The Baader 2″ UV / IR rejection filter is an absolute must have for webcam and CCD imagers.  Reflects destruction heat radiation. Scratch resistant 7 layer multicoating. Reduces ghosting for pin sharp star images. The only infrared blocking filter in … Continue reading →

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Olivon 1.25″ telescope filters

Posted on August 31, 2016 by Reviewer

The Olivon 1.25″ filters come in various versions including Moon, Polarising and coloured filters. Each one comes in a hard foam lined case. The filters themselves have the Olivon logo showing. These are high grade glass filters with a metal … Continue reading →

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Ostara #56 green filter. Perfect for viewing polar ice caps on Mars

Posted on August 25, 2015 by Reviewer

Colour filters are something that many astronomers will agree to disagree on with regards their effectiveness on bringing out certain features on Planets. So I can only go on what I have seen myself through my own telescope and not … Continue reading →

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