observing session
astronomy & space no comments »i was able to take my telescope out last night for a cold ars observing session on my back porch. the seeing last night was the best thus far, though it still wasn’t as good as i’ve seen it through other peoples telescopes. there were moments of really good seeing but the light pollution really detracted from me really seeing the detail i wanted. here are a few of the objects that i was able to see:
- m35 — an open star cluster in gemini with several hundred stars. most of the fainter stars were washed out in the background light pollution but the rest of the field was stunning in my 35mm panoptic. the number of stars in this cluster was really amazing and a pleasure looking at in the panoptic.
- m36 — another open star cluster, this one is in southern auriga. most of the fainter stars in this cluster were also washed out.
- m37 — another open star cluster in southern auriga. more washing out of the fainter stars though the number of brighter stars was much higher than m36.
- m38 — the final of 3 open messier star clusters in southern auriga. this was the faintest and the hardest of the 3 to find. the main reason was that most of my guide stars were washed out. i found it by scanning the field near m36 based on a printout from starry night pro.
- saturn — by far the nicest object of the evening. i saw some great detail in the cloud bands and was able to easily discern the cassini division. i also saw a few objects that i knew were it’s moons but i couldn’t identify them. this object really shows off the quality of the mirror in my portaball. i can’t wait until i get a higher powered eyepiece so i can really examine this planet.
- jupiter — this object didn’t start rising until late in my observing session and even then it was just above a nearby street light so i wasn’t able to see it that well. later this spring / summer i’m sure it is going to look amazing. i was able to see several moons and make out some distinct cloud banding but my knowledge there is severly lacking. i am planning an observing session later this year that is completely focused on jupiter, it’s clouds, and moons. hopefully by then i can speak with some intelligence about them.
- mars — a small red blob, i was hoping for more, but i didn’t get my scope in time and it was near the eastern horizon. maybe later this year it’ll give me some decent views.
like all good observing sessions it’s important to learn something and last night was no exception. the last few times i’ve taken the portaball out i’ve been frustrated with my 9mm nagler type-6 eyepiece. i was seeing some weird light flaring in the eyepiece when i was looking up and i originally though that there was an imperfection in the glass. little did i know that it was another case of human error biting me.
there’s a reason that the telescope came with a light shield that attaches to the upper tube assembly (uta), to block stray light on the opposite side of the focuser. with all of the street and porce lights out here i was getting some serious light trespassing into my upper tube assembly which was causing all kinds of weird light effects in my eyepiece. while observing i was doing a weird hug movement where i had my arms around the uta when all of the sudden the sky went clear and black in the eyepiece and the glare was gone. it was then that i realized that i was blocking the stray light and the proverbial light bulb went on over my head. needless to say i walked into the house and grabbed the light shield. after placing it on the upper tube assembly i was cooking with gas and had some great views the rest of the evening. let’s hope that i can keep these “duh” moments to a minimum shall we.
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