Category Archives: Filters

Ostara 1.25″ H-beta filter

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

Posted in Filters | Tagged , , | Comments Off on Ostara 1.25″ H-beta filter

Ostara 1.25″ O-III filter

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

Posted in Filters | Tagged , , | Comments Off on Ostara 1.25″ O-III filter

Olivon 1.25″ #12 light yellow filter

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

Posted in Filters | Tagged , , | Comments Off on Olivon 1.25″ #12 light yellow filter

Ostara compact 1.25″ telescope eyepiece and filter set OS333763

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

Posted in Eyepieces, Filters | Tagged , , | Comments Off on Ostara compact 1.25″ telescope eyepiece and filter set OS333763

Baader 2″ UV / IR rejection filter #2459210

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

Posted in Filters | Tagged , | Comments Off on Baader 2″ UV / IR rejection filter #2459210

Olivon 1.25″ telescope filters

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

Posted in Filters | Tagged , | Comments Off on Olivon 1.25″ telescope filters

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

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

Posted in Filters, News and Blog | Comments Off on Ostara #56 green filter. Perfect for viewing polar ice caps on Mars