... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

... Solanki S. K. Small-scale solar magnetic fields: An overview // Space Sky . ... Fe I 5247,1 5250,2 е, Fe I 6301,5 6302,5 е. ), . ... Lvm 5250 , 6301 ­ . ... k, rv- (rvw), rv- - (rvf). , rvo = rvf + k* rvw, rvo ­ . ... 2 , Lvm, [6] е 5247 40,5 5250 58,5 6301 67 6302 73 Lvm, [5] 40,8 40,8 64,8 58 Lvm, k=0,8 40,8 53,2 65,5 65 Lvm, k=-0,8 39 61,2 69,5 80 Lvm, k=3,0 40,8 44,8 65 61 Lvm, k=-3,0 27,2 53,5 65,2 49,5 80 86 If*f, rvo = (rvf + k*rvw)/ [1 + (1-f)/f *Ip/If], k = (Ip*p)/(If*f) = 0,72p/f (3) (2) ....

... Imaging GRIN Rod Lens (HAG's) | Relay Rod Lens (LAG's) | ... The Refractive Index Distributions (RID) in GRIN lens preforms are made by multi-stage optimized ion-exchange diffusion between silicate mineral glasses and salt melts. ... In the LAG lenses - L ow A perture GRIN the nature of the changing of refractive index in glass via ion-exchange lies mainly in molecular volume increase. ... LAG lenses are specially treated to create the dark anti-flick surface coating (Fig.2). ...