[education/kstars] doc: Fix minor typo

[Yuri Chornoivan]

Git commit 08c25289fef2471ff42c529a9ed322004ff298c4 by Yuri Chornoivan.
Committed on 30/11/2023 at 20:27.
Pushed by yurchor into branch 'master'.

Fix minor typo

M  +1    -1    doc/ekos-capture.docbook

https://invent.kde.org/education/kstars/-/commit/08c25289fef2471ff42c529a9ed322004ff298c4

diff --git a/doc/ekos-capture.docbook b/doc/ekos-capture.docbook
index 4237c7268c..80c67d6a10 100644
--- a/doc/ekos-capture.docbook
+++ b/doc/ekos-capture.docbook
@@ -507,7 +507,7 @@
 			The concept in Dr. Glover's calculation is to provide a sufficiently long exposure so that the effects of camera read-noise are overwhelmed by the signal coming from the target, but not so long an exposure that the effects of light pollution rise to levels which would overwhelm the signal from the target.
         </para>
         <para>
-			The implementation of this process does not consider the strength (magnitude or flux) of the intended target, nor does it consider other factors which may cause an astrophotographer to choose a alternate sub-exposure time. These other factors may include: the storage requirements and extended post-processing time for a large number of short exposures, the impacts of external factors that might occur in very long exposures, such as tracking / guiding performance, changes in weather conditions which may disrupt seeing conditions, intrusions from air traffic or passing satellites.
+			The implementation of this process does not consider the strength (magnitude or flux) of the intended target, nor does it consider other factors which may cause an astrophotographer to choose an alternate sub-exposure time. These other factors may include: the storage requirements and extended post-processing time for a large number of short exposures, the impacts of external factors that might occur in very long exposures, such as tracking / guiding performance, changes in weather conditions which may disrupt seeing conditions, intrusions from air traffic or passing satellites.
         </para>
         <para>
 Approaches to imaging can vary greatly in the selection of exposure times, and number of sub-exposures used for integration. A well accepted approach for imaging deep-sky objects utilizes long exposures, requires good guiding, good to excellent seeing conditions, and would typically employ filtering to reduce the effects of light pollution. At the other extreme are approaches such as speckle imaging techniques (commonly 'lucky imaging'), which utilize many hundreds to many thousands of extremely short exposures in an attempt to eliminate the effects of light pollution, poor seeing conditions, and poor guiding. Choices made for values of certain inputs to the exposure calculator will vary depending upon which imaging approach is being employed.</para>