Sleepy TelescopeAstrodon LRGBSHO 2" filters
Astrodon E-series Gen 2 LRGB and 3 nm Ha, OIII and SII filters of the Swan Reach remote rig.
The Swan Reach remote rig uses Astrodon filters, now sold under the CXB name: the Gen 2 E-series Tru-Balance LRGB set and 3 nm Ha, OIII and SII narrowband filters, in a ZWO EFW 7 × 2" filter wheel.
The E-series is designed for roughly equal 1:1:1 colour combine weights with full-frame sensors, and the maker recommends it for back-illuminated and Sony sensors. A spectral gap between the G and R filters reduces the light of high-pressure sodium street lamps, and B and G both pass over 97 % of the O III line. The red filter is narrower than an orange one, which raises the contrast of H II regions in galaxies. The filters are 3 mm fused silica and parfocal with the Astrodon narrowband filters.
They work with the ASI2600MM Pro on the RCOS 16" of the Swan Reach remote rig.
NGC 6744: Spiral Galaxy in Pavo
A large intermediate spiral galaxy in Pavo, tens of millions of light-years away, often compared to the Milky Way, with extended arms and a distorted companion, NGC 6744A.
NGC 253: The Sculptor Galaxy
The brightest galaxy of the Sculptor Group, about 11 million light-years away: a dusty starburst spiral seen at a high inclination, with prominent dust lanes and bright star-forming knots.
NGC 300: Spiral Galaxy in Sculptor
A late-type spiral galaxy about 6 million light-years away in Sculptor, also known as the Sculptor Pinwheel Galaxy, with loosely wound arms.
NGC 1851: Globular Cluster in Columba
A dense globular cluster in the southern constellation Columba, about 39,500 light-years away, with a very compact core and an extended halo.
NGC 346: Star-Forming Nebula in the Small Magellanic Cloud
The brightest star-forming region of the Small Magellanic Cloud: a young open cluster wrapped in glowing hydrogen gas, about 200,000 light-years away in Tucana.