Last night I failed to see ANY craterlets in Plato. I was using a Widestar 4" (older model) 600 mm focal length, TV 2.5 powermate and 10 mm Clave'. The moon was only about 25* above the horizon when I abandoned observations due to cloud. How many craterlets can be seen do you think with the above setup? Seeing was average at best. How difficult are the craterlets to see with your 100 mm?
I found this using google
Plato craterlets view)
Quote" A few years back they were under such odd, cooperative light that I'm fairly sure the five majors would have shown easily in an 80mm scope. "End of quote.
I also found this David Kingsley account on same search:
Quote " For the Plato test, I began with a Vixen 24 to 8 mm zoom eyepiece ccombined with a Celestron Ultima 2x barlow. That gives a maximum magnification of about 240 in the 7 inch Starmaster. Views were very steady, so I put the same zoom eyepiece into a Televue 3x Barlow instead. At full zoom, that combination gives a maximum magnification of 360x in the 7 inch Dob (just over 50x per inch). Views were still nice and steady, so that's what I used for the rest of the night. When I first looked at the moon, I could make out 4 small craterlets in the otherwise smooth floor of Plato, (a tight double pair, and two single craterlets in a curving arc). I didn't have an atlas with me, so decided to sketch positions for later comparison to Rukl and photographs. As I have often found before, the act of sketching was a big help in teasing out additional detail. As I carefully studied Plato to make my sketch, additional craterlets begin to pop into view. One was near the western edge, as prominent as the first 4 that I had seen. This one had been missed before only because of its proximity to the rim. Then smaller ones began appearing near the original single craters near the center. These were harder to hold, like faint companions of a difficult double star. But I was patient, the sky was steady, and as I remained seated and still at the eyepiece, several small craters became obvious. I had sketched positions of 12 craterlets when the skies finally clouded over for good at about 1:15 am."End of quote.
Anthony @ 41*S 175*E