Category Archives: Reducer – Corrector

Refractor Reducers: TeleVue TRF-2008 vs Altair Lightwave 0.8x on SW Evostar 80ED & Equinox 80 ED

January 11, 2017 // by ecuador

APO/ED refractors are great, however they do need a flattener to give you those pinpoint stars, or, even better, a reducer/flattener to also give you faster exposures and wider field at the same time. Some¬† refractors will have a matched reducers (especially the “slow” ones), but, for those that do not the expensive TeleVue TRF-2008 […]

Celestron f/6.3 reducer/corrector with DSLR on C9.25

March 31, 2016 // by ecuador

Although I got my C9.25 mainly for planets, the fact that my tiny iOptron ZEQ25 mount seems to handle it for longer exposures made me look into using it for DSOs as well. The problem of course is that it is quite slow at f/10, has a very demanding 2350mm focal length and has quite […]

Starguider 2″ Field Flattener (TSFlat2) on SkyWatcher Equinox 80 ED

March 2, 2016 // by ecuador

I’ve already tried this refractor Field Flattener on a SkyWatcher Evostar 80ED in a previous post. To sum it up, it did perform well on the Evostar and the best value was the Starguider 2″ Field Flattener sold by Sky’s the Limit on ebay.co.uk, which is identical to the TSFlat2 from TS (but the TSFlat2 […]

Starguider 2″ Field Flattener (TSFlat2) on SkyWatcher Evostar 80ED

February 19, 2015 // by ecuador

The lowest cost field flattener / corrector that I could find for my SW 80ED refractor was the Starguider 2″ Field Flattener sold by Sky’s the Limit on ebay.co.uk. They have a ¬£124 buy it now price currently. According to the seller (who is well-trusted in the UK) this is the same as the TS […]