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365Astronomy No 551 Lunar & Planetary Filter Set - 1.25-inch

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Model
365551-COLOUR-SET
Weight
0.18 kg
RRP:
£29.40
Our price:
£23.00
22%

including VAT 20.00 % ( £3.83 )
Qty

D2A14

This high quality colour filter set contains 3 colour filters and a neutral density filter for planetary and lunar observations. It comes in a foam lined plastic screw top storage case.

Size: 1.25"
Material: optical quality glass
Filters included:
#23A - red
#38A - dark blue
#58 - green
ND96-0.6 - neutral density (grey) filter with 25% transmission level

Usage:
DARK RED: above 150mm aperture. Offers extreme contrast above 200mm. Provides very high contrast of the Moon, polar caps of Mars and it's an excellent choice for observing Venus at daytime as it blocks blue, so the sky appears black
RED: same as dark red but for apertures above 100mm: Moon, Mars and Venus at daytime


GREEN: from 60mm. An important universal contrast filter. Strong enhancement of surface features of the Moon. Very good for low magnifications. Enhances reddish structures in the Great Red Spot on Jupiter. Also good for Mars and Saturn.
DARK GREEN: Same effects as as green, but
from 100mm. White spots in Satrun's atmosphere represented better from 200mm aperture.

BLUE: from 70mm. General contrast strengthening for the Moon - away from the terminator. Very good for increasing contrast in the bands of Jupiter and Saturn. Good for comet hunting: enhances the contrast of the tail.
DARK BLUE: from 100mm, but
ideal from 150mm aperture. Same as blue.


 

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