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re flattners
Would like to learn more about these too,and how to install them etc,I am using a F 7.7 103mm refractor.Tony did a very nice image of 'coat hanger' and comet,recently-so would like to try something like that one day-If I can ever get my AG working properly.
How much are the flattener things and what do the look like?
Alternatively-I could use a 400 mm lens I have for those wide shots.but it would mean a lot of stuffing around taking main scope off and putting stuff back on a plate etc.
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