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My first view of Comet ISON

Comet ISON October 6, 2013 by Jane Houston Jones

Comet ISON October 6, 2013 by Jane Houston Jones

All year long, astronomers have been writing about Comet ISON: will it sizzle or will it fizzle? I was chomping at the bit, waiting for the visual magnitude to brighten enough to try viewing this comet through my own telescope (shown on the right). Finally, the weekend, a dark sky, comet magnitude and perfect weather all came together Saturday night, October 5th and Sunday morning, October 6th.

First, backtrack 16 years. I fondly recall the great comet of 1997 – Comet C/1995 O1, Comet Hale-Bopp, which ruled the skies for 18 months. When it passed perihelion on April 1, 1997, it was brighter than all stars in the sky except for Sirius. With its 50 degree long tails it spanned the evening sky, and was the talk of the town, the water cooler and even led the commute chatter among the passengers in my van pool. Everybody saw it. I sketched it. Astronomy clubs flourished with eager new stargazers. Telescopes were literally flying off the shelf. Then, two years after it faded from view, in April 1999, I observed Comet Hale-Bopp from Ayers Rock in the Australian Outback, through my 12.5-inch telescope, as it scooted in front of the Large Magellanic Cloud. It was over 8 AU/700 million miles away, as far away as Saturn is from Earth. I’ve been remembering the anticipation then the excitement of Hale-Bopp while impatiently waiting for ISON.

Comet ISON’s magnitude is somewhere in the magnitude 10-11? range at the time of my Sunday morning sketch, tho’ all the sources I use show different magnitudes. On October 5, when I observed and made this little sketch these three sources I regularly use show different magnitudes. Magnitude 10.6 here. Magnitude 10.7 here. And magnitude 10 (or even brighter 9.something) here.

So for my observation, I thought it would be more interesting to show the magnitude of many of the the nearby stars I could see in my eyepiece. I used my 12.5-inch f/6.75 reflector and a 19mm Nagler Panoptic eyepiece for a magnification of 96x. Conditions were spectacular, very steady seeing at 5:00 am, and away from the the Zodiacal Light and Milky Way the limiting magnitude had been an impressive 6.5. I was able to see three 14.0 magnitude stars, two very near the comet. I tried higher and lower magnification (over 200x and under 50x) and couldn’t see the comet in any eyepiece over 125x. The sketch shows the comet a bit brighter than it really appeared. It was like an oval puff of barely-there cloud with a brighter condensed area, I assume was the coma. It was much larger than I was expecting. No tail visible. Can’t wait to observe and sketch it again on October 26th despite a big bright moon and November 2nd which should be a perfect moonless viewing night. Until then, I’m looking forward to hearing about more visible reports. Photos are great, but star-stuff hitting your eyes is the best!

Perihelion or bust!

The August 1963 March Looking Back and Looking forward in 2013 by Dr. Alan S. Miller (my dad)

Note: this is the unedited version my dad sent out to the family 2 weeks ago. After living through this, I loved the original version the best, but here is the September 2, 2013 published version Marin Voice: Marches on Washington — 1963 and 2013 as well.

There’s nothing quite like a half century to [...]

Spring stargazing: the Milky Way and beyond!

Follow the dipper arc to Arcturus, then spike to Spica

Omega Centauri globular cluster 35 degrees below Spica

Springtime is my favorite observing season. In the course of an evening you can face away from our own galaxy and feast your eyes on other Milky Ways, while tracking down some of the most spectacular [...]

My first view of Comet PanSTARRS 3/11/13

Sunday morning (Sunday March 10) we drove home from a wonderful Amboy Crater observing night. As we drove up our street, we have a good view of Mt. Wilson and the telescopes, as you can see here. My Comet PanSTARRS sketches (and astrophotos tomorrow) from near the Mt. Wilson Observatory (but on the other side [...]

Kemble's Cascade: the joy of observing with binoculars

Start your night with binoculars

Here’s Mojo’s atrophotography post from the same evening.

After some months away from dark skies, everything looks foreign, even to long time observers like me. I recognize the familiar constellations, but sometimes I forget where some of my favorite telescopic targets are located. On nights like this, I don’t just revisit [...]

Missing Susan every day

2012 Monrovia Relay for Life Luminaria in honor of Susan Niebur, @whymommy

Saturn cut from Susan's Luminaria

Luminaria for Mojo (that’s a cutout galaxy which was super difficult to cut out)

I started writing this just after Susan died, but couldn’t bring myself to finish it. Today is the one year anniversary of [...]

What's Up in 2013 - at a glance

All year long, astronomers have been writing about Comet ISON: will it sizzle or will it fizzle? Both! Here’s my What’s Up video, with December status (written in mid November, but luckily, the comet didn’t completely fizzle)

ISON in December 2013

Comet ISON first spotted by amateur astronomer Bruce Gary and has been imaged by many [...]

Venus kissed the moon - a daytime occultation of Venus

going

going

gone!

Venus reappears!

If you were up before sunrise on Monday, August 13th, 2012 you might have seen a very bright “star” next to the moon. As dawn turned to daylight, you could still see that star, or rather, that planet in the daytime snuggled up to the crescent moon.

That planet was [...]

Observing in the neighborhood

Summer Milky Way, Scorpius and dark nebulae, image by Morris Jones

Observing near the summer solstice means a short observing night sandwiched between a late sunset and an early dawn. Rather than rush through an observing project I find it’s a great time of the year to sit back and trace familiar constellations in my [...]

NASA Social at Dryden Flight Research Center, May 4, 2012

This way to the first @DrydenSocial

New NASA Social lanyard, badge and patch, old tweetup pins

Here I am inside the Astronaut CTV (Crew Transport Vehicle) I would have laid down on the bed I’m sitting on, but I was too excited!

Here are the fabulous handouts and books for the attendees

My other [...]