OPTOLONG H-ALPHA 7nm NARROWBAND FILTER Size:36mm Note: This does not include

Note: This does not include a dovetail bar

In case of remote observatories

The SkyWatcher 300 Quattro is a Newtonian telescope with the super fast focal ratio of f/4

Set of five fine adjustment spacer rings (optical thickness of 0

AZ4000 HPS mount with built-in precision absolute encoders

OPTOLONG H-ALPHA 7nm NARROWBAND FILTER Size:36mm Note: This does not includeThe Optolong H Alpha 7nm narrowband filter boosts the contrast of emission nebulae and supernova remnants for professional results, even under a bright sky affected by light pollution. This filter is used in combination with the OIII and SII filter to compose a narrowband colour image. The 7nm band pass is only 2% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark backgrounds.