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when toggle format what by license comment
S Mar 13, 2021 at 18:18 history suggested WDC CC BY-SA 4.0
fix typo in title
Mar 13, 2021 at 5:19 comment added WDC The two focal lengths are f1 = 1100 mm and f2 = 21 mm, in principle the two lenses should be placed f1+f2 = 1121 mm apart. If not, you may see a blurry image, together with the chromatic aberration. Also, the diameter of your eyepiece is too large in that only beam radius of 21/1100*7.5 = 0.14 cm can travel through, much smaller than the 1 cm aperture size -- which is okay and does not relate to a blurry image.
Mar 13, 2021 at 5:08 review Suggested edits
S Mar 13, 2021 at 18:18
Mar 12, 2021 at 19:12 comment added sanoj Actually I didn't. I am kind of new to telescope making. This is just a first try... Can u guide..?
Mar 12, 2021 at 19:11 vote accept sanoj
Mar 11, 2021 at 22:54 answer added uhoh timeline score: 3
Mar 11, 2021 at 22:32 history edited uhoh
edited tags
Mar 11, 2021 at 18:56 comment added planetmaker How do you make sure they are axially well aligned?
Mar 11, 2021 at 18:39 comment added sanoj Yes. I tried it but still kind of blurry...
Mar 11, 2021 at 16:46 comment added planetmaker Did you adjust the optics to focus on your object of interest (i.e. adjusting the lens separation slightly) so that your image becomes sharp? Like with manual photo lenses you have to manually set to focus on what you look at.
Mar 11, 2021 at 14:31 review First posts
Mar 11, 2021 at 15:10
Mar 11, 2021 at 14:30 history asked sanoj CC BY-SA 4.0