RichardL Posted December 27, 2011 Share Posted December 27, 2011 Hi. I've been watching the posts for a while but thought it about time I introduced myself. I have been an amateur astronomer for some years now, using a 6 inch "Siberia" newtonian - a Tal by another name I think. Mostly from my back garden just NE of London UK. However, I think light pollution and haze have got steadily worse, to the extent that only the brightest stars are visible due S and below zero degrees declination. (I managed to find Uranus a couple of weeks ago, but only because I could get the telescope pointed in the right direction using the setting circles.)Gathered all my courage last year and washed the primary mirror - and have been struggling with collimation ever since! Currently, if I am looking east of the meridian things seem to vanish in the field of view when I move my eye slightly. All seems to be lined up using a laser collimator; maybe I need to move the secondary up or down the tube. Words of advice welcomed! I'll keep playing with it till it looks right.BTW, the rate at which new people are signing up seems stupendous. Is it always like this? Link to comment Share on other sites More sharing options...
Bizibilder Posted December 27, 2011 Share Posted December 27, 2011 Hello Richard and welcome to SGL!! Link to comment Share on other sites More sharing options...
Rapallokid Posted December 27, 2011 Share Posted December 27, 2011 Hi and welcome from me. Link to comment Share on other sites More sharing options...
Charon Posted December 27, 2011 Share Posted December 27, 2011 Welcome to the forum Richard. Link to comment Share on other sites More sharing options...
saturn4me Posted December 27, 2011 Share Posted December 27, 2011 Hi and welcome to SGL! Link to comment Share on other sites More sharing options...
Astro Imp Posted December 27, 2011 Share Posted December 27, 2011 Hi Richard,Welcome to the lounge. Link to comment Share on other sites More sharing options...
Double Kick Drum Posted December 27, 2011 Share Posted December 27, 2011 Hi and welcome to SGL. Link to comment Share on other sites More sharing options...
DOBBY Posted December 27, 2011 Share Posted December 27, 2011 Hi Richard... & welcome to the forum Link to comment Share on other sites More sharing options...
Mr Spock Posted December 27, 2011 Share Posted December 27, 2011 Hi Richard, welcome to SGL Link to comment Share on other sites More sharing options...
JamesM Posted December 27, 2011 Share Posted December 27, 2011 Hi Richard and welcome to the forumClear skiesJames Link to comment Share on other sites More sharing options...
Tinker1947 Posted December 27, 2011 Share Posted December 27, 2011 Hi Richard, check the laser collimator is not out of line, some people recommend a Cheshire Collimator no laser involved so no error...First Light Optics - Cheshire Collimating Eyepiece Link to comment Share on other sites More sharing options...
AndyH Posted December 27, 2011 Share Posted December 27, 2011 Welcome to SGL, Richard.A truly fine scope you have ! I find the simple '35mm film canister with pinhole' approach, works surprisingly well, for aligning the primary mirror. Centre the secondary under the focuser first, simply with your eye, before touching the primary. Once those two steps have been performed during the day, nothing gets a scope bang on like a star test. Find a bright star, un focus it a bit and look at the circles around the central disc. Adjust the primary until they look as symetrical as possible, then tighten up the central locking screw on the primary mirror cell.Andy. Link to comment Share on other sites More sharing options...
spaceboy Posted December 27, 2011 Share Posted December 27, 2011 Welcome to SGL Link to comment Share on other sites More sharing options...
Rusty Strings Posted December 28, 2011 Share Posted December 28, 2011 Hi and welcome Link to comment Share on other sites More sharing options...
ScubaMike Posted December 28, 2011 Share Posted December 28, 2011 Hi Richard,Welcome to the forums. Link to comment Share on other sites More sharing options...
glowjet Posted December 28, 2011 Share Posted December 28, 2011 Hi Richard and welcome to SGL John. Link to comment Share on other sites More sharing options...
todd8137 Posted December 28, 2011 Share Posted December 28, 2011 i should imagine the lasser might be out have you tried a cheshire just to check ?i think sgl is growing bigger by the day and vastly becoming popular Link to comment Share on other sites More sharing options...
pessoa Posted December 28, 2011 Share Posted December 28, 2011 Hi and welcome. Link to comment Share on other sites More sharing options...
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