Celestron 21041 PowerSeeker 60AZ Telescope

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I wandered over to M42 with 12mm UO Konig and split the trapezium with no effort and the nebula began to form out of the darkness as my eyes dark adapted. I switched to the 16mm Konig. After a few minutes I could follow the long arms halfway around and see the dark lanes and mottlings. The smoothness and deep contrast impressed me. I think it is a decent budget telescope OTA. I imagine the 60mm is too. The behavior of the pattern on either side of focusis not that of simple coma or astigmatism. If they are present, they are masked by the chromatism.

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Setting up the telescope is a breeze, so you can enjoy the wonders of the universe in no time. Even on your first time out, you can assemble the telescope and its accessories in just a few minutes. The adjustable tripod legs allow you to customize the telescope’s height or place it on raised surfaces like a picnic table. The total telescope kit weighs in at just 3.8 pounds—perfect for impromptu observing sessions or transporting wherever life’s adventures take you. Moon Filter – Enjoy the details of the Moon without the brightness. It only takes a second or two to transform your regular eyepiece into one suited for lunar observations—simply thread this filter onto the bottom of your eyepieces. The Moon Filter is also helpful when observing Venus or bright terrestrial scenes to reduce glare. but at least providing 675x capability in a 2.4" scope is consistent with "Powerseeker" in the name. I did the same observation of Marswith the 80, using 100x (4mm setting on 3-6 Nagler) and red #23 to see a somewhat lower contrast outline of the dark regions as well as the brightening to the south, probably Hellas although I had some impression of what should have been the pole. This 80 seems to beconsiderably sharper than my original ST80. The 60 provided a little more detail overall.The tests above demonstrate that the problem is not caused by focuser misalignment to the OTA or a problem with the objective cell. Instead it is inherent to the objective lens set, and more specifically, the flint since the chromatic aberration rotates with it. I suspect this is caused by a small amount of decentering or a subtle difference in spacing (relative tilt)between the two lenses. If it is decentering I should be able totap a hole for a grub screwto push the flint slightly away from the bottom third of the cell.

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TeleVue TV60 f/6 ED doublet: fantastic and compact scope, looked through a stunning sample, has a bit more CA than the slower aforementioned fluorite doublets. I guess if one knew the thread pitch and diameterand happened to have a die large enough to cut the threads, a custom transition piece could be made. Another option might be to cut the end off the plastic one and make a transition piece out of it in some way. As exit pupil gets smaller the image gets dimmer. And it does not matter the scope size for that. The difference is that a larger aperture telescope will provide a given exit pupil at a higher magnification. The reason is that you can also calculate the exit pupil by dividing the aperture of the telescope by the magnification the eyepiece gives in that telescope.I don't know what the current 60mm F15 are like, but I have a Vixen Custom 60L from the 1990's that performs wonderfully. The scope came with one 25mm MA 0.965" eyepiece. I modified a 1.25" 10mm eyepiece, and later a 1.25" 6mm Orthoscopic by adding home-made 0.965" barrels. Buttercup handles the increased magnifications beautifully. Accessories include: two eyepieces (20mm and 8mm), erect image star diagonal, Barlow lens, moon filter, and finderscope.

Celestron PowerSeeker 70mm f/10 EQ Refractor Telescope Celestron PowerSeeker 70mm f/10 EQ Refractor Telescope

I enjoy just seeing what level of performance I can squeeze out of just 60mm - take this post on another forum as an example. Something in the 20mm range for wider-field viewing - looks like the Televue Panoptic gets pretty good marks in this range, but very open to recommendations The Travel Scope 60 is a refractor telescope perfect for terrestrial and celestial viewing on the go. By night, you can use your Travel Scope to view the planets, Moon, star clusters, and brighter deep sky objects like the Orion Nebula and Andromeda Galaxy. During the day, attach the included erect image diagonal and the optical tube is ideal for using as a spotting scope to view landscapes, wildlife, and more. I pointed it at Betelguese and it showed as a tiny yellow lightbulb. It almost looked solid. I don't know if it's supposed to show diffractions rings or not, but I didn't notice any.Yes, I figure the 7T1 for 129x with the 60 f/15should be about the limit for my eye before diffraction begins to take over--assuming the optics are diffraction limited and the color is nearly negligible. I don't have an 8 withoutBarlowing a 16so the next step lowerfor me is a 9. I wouldn't be surprised if the difference between 100 and 129x with the scope was only image scale providing some confirmation rather than new detail. I see thatwith the 60ED going from 120x (3mm) to 144x (2.5mm). Finally had a few minutes last night to try out both the DeLite and the Brandon on Jupiter and Saturn in the FS60Q with 1.25" Tak diagonal. Seeing was about 1.5 per Good to Stargaze. Accessories include: two eyepieces (20mm and 4mm), erect image star diagonal, finderscope, and a Barlow Lens.