High resolution imaging of the sun and other extended sources

dc.contributor.author	Krishnakumar, V
dc.contributor.author	Venkatakrishnan, P
dc.date.accessioned	2009-01-29T14:22:20Z
dc.date.available	2009-01-29T14:22:20Z
dc.date.issued	1998
dc.identifier.citation	R. A. Donahue and J. A. Bookbinder., eds., The Tenth Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, 2003, pp. CD 2003 - CD 2007	en
dc.identifier.uri	http://hdl.handle.net/2248/4298
dc.description.abstract	The functional form of the long exposure OTF P(u,v) is known (Fried 1966; Kirshnakumar & Venkatakrishnan 1997a) and i(x,y) is what we record. The knowledge of P(u,v) is complete once ro is estimated. Our aim is to recover oe(x,y) which is close to o(x,y). We present here the results of estimation of Fried's parameter ro using a parameter search method (Kirshnakumar & Venkatakrishnan 1997b) and an modified Wiener filter (U filter) (Roddier 1981) for image restoration. The estimation of ro and restoration using the U filter on simulations and images of an extended stellar source, globular cluster NGC 1409, is presented.	en
dc.language.iso	en	en
dc.publisher	Astronomical Society of the Pacific	en
dc.relation.ispartofseries	Astronomical Society of the Pacific Conference Series, Vol. 154
dc.relation.uri	http://adsabs.harvard.edu/abs/1998ASPC..154.2003K	en
dc.subject	Image Processing	en
dc.subject	Image Restoration	en
dc.subject	Point Spread Function	en
dc.title	High resolution imaging of the sun and other extended sources	en
dc.type	Article	en