Comet 103P Hartley
Posted 24 September 2010 - 08:34 PM
Oct 8 is will be around mag 5 +- and near the Double Cluster in Cass. Should make for a great photo shot.
Oct 20 it will be closest and may develop the classic tail - in Perseus as it also gets closer to the sun. Did that make sense? Like the phrase "throw the cow over the fence, some hay".
Anyone manage any frames last dark cycle? We need some activity here. Lots of lurkers paying a visit to see many of our postings, with some saying hello. Many former film users I'd bet.
Posted 26 September 2010 - 02:52 AM
I've been following some of the posts about this comet and will be attempting to get some shots of it. I'll be checking out a new observing location later this week and depending on how dark the sky is, I may have a look to see if I can locate it.
I did get one 60 min. shot of the Pleiades on the 7th with my 35mm Canon attached to my SV70. This was first light for the SV70 as well as my LP filter. The film is still in the camera as I have some frames left to expose. I wish I had time to do more exposures that night because the sky was pretty clear. I could just barely see M31 naked eye without averted vision. Alas some clouds moved in and that put an end to my night. I hope to finish the roll in the next couple of weeks so I should have some images to post soon.
Posted 26 September 2010 - 01:11 PM
I'm going to keep tabs on Hartley as well, but if you hear of it growning tail, etc, chime in. I can't think of a sweeter combination, comet and the Double Cluster.
I'm hoping enough film guys will take a whack at this object, and hopefully some will have clear weather to be able to post some shots. Different lenses, and or scopes, formats, would make for an interesting thread.
Good hunting to us all.
Posted 26 September 2010 - 02:41 PM
It's been a summer of changes but things are starting to settle down now and I expect to get out imaging more.
Posted 26 September 2010 - 02:50 PM
Posted 26 September 2010 - 08:40 PM
Posted 26 September 2010 - 10:07 PM
I had an EQ6 as well, and frankly, it was a very good mount. I spent one night - broken clouds moved in, drift aligning it, and once that was done, got the polar scope dialed in perfectly. I could spin the RA axis around and Polaris stayed on the line. This saved me time during set up, and I could get an accurate drift done inside 45 minutes to where I could use the 400 lens. The ST-4 guider simply plugged in and worked. The only reason I sold it - under mounted for the Tec.
It's fine mount. Get to know it - tighten up the gear mesh a bit, and it won't let you down with the performance.
Posted 28 September 2010 - 11:45 AM
Planetary and Solar System. Beginning of October it should be near the Pac Man Nebula.
No pressure Rick - if anyone can do it - how bout now - well? I know you will be the first to post Hartley in the film forum. I'm too cheap to pull a roll with 9 shots remaining.
Posted 28 September 2010 - 12:42 PM
This was a fifteen minute exposure on Acros from Sunday night. I'm surprised how much the comet moved in 15 minutes. This was through my C14 with about 2400 mm focal length.
I suppose as the comet gets brighter, one could take shorter exposures, though its angular velocity will continue to increase, right? I hope to shoot it Sept 9 when it is near the double cluster and the heart and soul nebulae, using my 150mm lens on a Rollei. Hopefully then it will have a tail and some color. I plan to use Ektar 100 for that.
Posted 28 September 2010 - 07:07 PM
Great shot Rick. That sucker is moving along pretty quick. As it gets brighter it will be getting my attention.
Posted 28 September 2010 - 09:32 PM
Posted 28 September 2010 - 09:46 PM
Posted 28 September 2010 - 10:03 PM
I was trying to imagine what something like that would look like going thru the Double Cluster? Waiting on my films to arrive from processing. I hope to have something to post of that object and others.
Posted 28 September 2010 - 10:04 PM
Posted 29 September 2010 - 01:01 AM
Nice catch you have there. If that was shot at a 2400mm fl., it is going to be a challenge to visually guide on because of the corrections in both RA and Dec. If I figure correctly, based on your numbers, the comet moved approx 24.38 arc seconds in the 15 min. that the exposure took. I can't wait to see your Ektar shots!
Posted 29 September 2010 - 04:08 PM
I'm going to shoot the comet if weather and time allow. I hope to capture it's journey between stars during the whole October. Unfortunatelly there can be easily overcast for several weeks in this part of year.
More experienced shooters, what exposure would you expect to be best for the comet? I've noticed all the good film exposures of the comet Holmes I've found on net were pushed.
Posted 29 September 2010 - 11:43 PM
Posted 01 October 2010 - 09:48 PM
I'm thinking I will shoot sidereal rate, and let the comet blur it's way across the frame. Unless it suddenly goes bazinga like Holmes did. Wouldn't that be nice?
Posted 09 October 2010 - 02:42 PM
Posted 10 October 2010 - 12:45 PM
Posted 10 October 2010 - 01:15 PM
Posted 10 October 2010 - 03:39 PM
I didn't hyper the Ektar for this shot. I want to see how this film does unhypered. Does anyone remember any general guidelines for hypering color negative film? I have a 50 deg thermostat on my hypering chamber and I seem to remember some films require 30. At least I can use sheet film instead of roll film for my experiments, so I can try one sheet at a time.