Originally posted by: ericlp
I just got a new Celestron Nexstar 114 GT Telescope .... I was wondering... Why would I need all the filters? I was told to get a 2 X Barlow lens to get better magnification. Why would I need all the filters and stuff or is this kit for really expensive telescopes? Thanks.
copied of course.
<BLOCKQUOTE><B>#15 Deep Yellow Planetary Filter</B>
<LI>red and orange features on Saturn, Jupiter, and Mars
<LI>contrast of lunar features
<LI>low-contrast cloud detail on Venus
<B>#25 Red Planetary Filter</B>
<LI>Martian surface details in large scopes
<LI>bluish cloud regions on Jupiter and Saturn
<LI>contrast of Mercury against blue sky
<LI>cloud definition on Venus
<B>#58 Green Planetary Filter</B>
<LI>contrast of blue and red structures on Jupiter (including Red Spot)
<LI>melt lines around Martian polar ice caps
<LI>Saturn's cloud belts
<B>#80A Medium Blue Planetary Filter</B>
<LI>details in Jupiter's cloud belts and Red Spot
<LI>high clouds and polar caps on Mars
<LI>lunar surface details
<LI>Venus cloud features
</BLOCKQUOTE>
<B>Expansion Set of Four 1.25" Filters</B>
<FONT size=2>Intermediate colors, perfect for expanding our basic set of four filters. Each filter includes individual protective case.
<BLOCKQUOTE><B>#11 Yellow-Green</B> <I>62% Transmission</I>
<LI>contrast of Martian maria and polar caps
<LI>orange and red features on Jupiter and Saturn
<LI>clouds on Venus
<B>#21 Orange</B> <I>46% Transmission</I>
<LI>contrast on Mercury and Venus in daylight
<LI>bands and festoons on Jupiter and Saturn
<LI>corrects blue color of Sun in Mylar solar filters
<B>#47 Violet</B> <I>13% Transmission</I>
<LI>contrast of Venus, reducing glare and twinkling
<LI>surface detail on Mercury and Venus
<LI>ring structure of Saturn
<B>#82A Pale Blue</B> <I>73% Transmission</I>
<LI>orange and purple cloud belts of Saturn and Jupiter
<LI>comet tails
<LI>suppresses chromatic aberration in refractors
</BLOCKQUOTE>
<B>Advanced Set of Four 1.25" Filters</B>
<FONT size=2>Provides three light colors useful alone and for stacking with other filters. Each filter includes individual protective case.
<BLOCKQUOTE><B>#8 Light Yellow</B> <I>83% Transmission</I>
<LI>maria on Mars
<LI>comet dust tail and coma
<LI>orange and red belts on Jupiter and Saturn
<B>#23A Light Red</B> <I>25% Transmission</I>
<LI>reddish areas, plains, and maria on Mars
<LI>blue clouds and polar areas of Jupiter and Saturn
<LI>Mercury and Venus in daylight and twilight
<B>#38A Deep Blue</B> <I>17% Transmission</I>
<LI>dust storms on Mars
<LI>subtle details in Saturn cloud belts
<LI>bright comet gas tails
<B>#56 Light Green</B> <I>53% Transmission</I>
<LI>Martian polar caps and low clouds
<LI>low-contrast blue and red hues of Jupiter
<LI>surface contrast of Saturn
</BLOCKQUOTE></FONT></FONT>