BAADER SLOAN/SDSS G' PHOTOMETRIC FILTER Size:2" It combines the strength and

It combines the strength and stableness of a pier with the levelling flexibility of a tripod

The pier must be installed on a concrete base at least 150mm thick

Combining the reflecting and double refracting action (the incoming light passes through the full thickness of the primary mirror twice) of this element

These German-made and ISO/CE-certified glasses are perfect for watching the partial phase of solar eclipses or sunspot clusters

and its loading capacity allows for mounting instruments like 200mm diameter refractors

BAADER SLOAN/SDSS G' PHOTOMETRIC FILTER Size:2" It combines the strength andThe Baader SLOAN g' filter is a precision grade photometric bandpass filter with a central wavelength window around 468. 6nm. In 2000, a new era in photometry began: with the Sloan Digital Sky Survey (SDSS), a 2. 5m telescope at Apache Point Observatory (New Mexico, USA) surveyed one third of the sky in five wavelengths, with windows around 355. 1, 468. 6, 616. 6, 748. 0 and 893. 2 nm. This system was also used for the Pan STARRS project; the broad