Yet another challenging double star in the constellation Cygnus. I've been hanging out around here because it is currently in a favourable position in the sky given my limited view of where I was. Psi is listed as a challenge for small scopes and upon it's discovery I could say that a small scope with good quality optics won't have any problems seeing this. Just remember what to expect. Psi has a magnitude differential of 5.0 and 7.5 with a separation of 2.9 arc second. It took me a while to locate it mostly because of the seriously light polluted skies of Mississauga and adding to it, I was just using a red dot finder. The Pronto had no problem splitting this star into it's components with a nice black space in between at about 152X. Seeing helped. It was a steady night. This fine double star is a great example of colour differential, one orange and one blue. It was a nice site.
How I found it was basically scanning very slowly the region just northwest of Deneb somewhat perpendicular to Delta Cygni using low power. Nice thing is the Pronto almost acts as a finderscope in itself. However, I will still maintain that it would have been a lot easier to find in darker skies where you can see more reference stars to get there a tad quicker.
Wednesday, July 8, 2009
Tuesday, July 7, 2009
Confessions of a depressed astronomer
Lingering Cold Core Lows, conflicting schedules, dragon boat races and what have you have put observing onto the back burner of life. The saddest thing to see as an astronomer is looking at two refractors staring at a blank ceiling as opposed to a night sky. No matter how you slice it, the evenings of end of June and beginning of July have been total duds in Toronto/Mississauga. There was one grand night, but I was too busy getting ready for Hamilton Waterfest...oh well, it happens.
Cold Core Lows are nothing new in Southern Ontario and around the Great Lakes. They visit, spin, sit, spin, sit and spin, spin and sit all the while inundating the area with clouds, rain, sun, clouds, rain, sun but not necessarily in that order. This past one was particularly stubborn and refused to leave for sometime. The only odd part about this was the timing. Typically they don't visit in late June, but this one decided to arrive late. On the positives were clear air and moderate temperatures. The down side was no observing...they have to be the ultimate insult to the astronomer. Your scopes just sit. You hope to despair. It's not a good feeling.
Alas the thing finally blew away, but schedules got busier and well, you know the rest. One night soon the Pronto or Antares will get the call. When that will be is whenever it can happen, at least I hope soon. Until then, two refractors just sit idle, looking at a ceiling. It's sad.
M:)
Cold Core Lows are nothing new in Southern Ontario and around the Great Lakes. They visit, spin, sit, spin, sit and spin, spin and sit all the while inundating the area with clouds, rain, sun, clouds, rain, sun but not necessarily in that order. This past one was particularly stubborn and refused to leave for sometime. The only odd part about this was the timing. Typically they don't visit in late June, but this one decided to arrive late. On the positives were clear air and moderate temperatures. The down side was no observing...they have to be the ultimate insult to the astronomer. Your scopes just sit. You hope to despair. It's not a good feeling.
Alas the thing finally blew away, but schedules got busier and well, you know the rest. One night soon the Pronto or Antares will get the call. When that will be is whenever it can happen, at least I hope soon. Until then, two refractors just sit idle, looking at a ceiling. It's sad.
M:)
In praise of the lowly Pronto by Chris Greene (from Cloudy Nights Refractor Forum)
In praise of the lowly Pronto
by Chris Greene
Once upon a time, the Pronto was quite the hit in the astronomy world. Then, as other small, high-end refractors came onto the scene, the Pronto lost its audience and favor with most but not me. Here's my Pronto story...
Some years ago, when I was getting back into astronomy for the umpteenth time, I learned about the little TV Pronto. Tele Vue referred to it as a "semi-apo" refractor, whatever that means.
I was scopeless at the time but living under fairly dark rural skies in Idaho. As I've always preferred refractors for their ease of use, I started searching around for a used one. After a time I located a green one with an included Telepod mount. It came with the 20mm TV Plossl and that was to be my only eyepiece for a few weeks. I was really impressed with the build quality and when it saw first light I was just amazed at the wide field views of the heavens even with the 20mm plossl. I was able to locate a number of Messier objects and was impressed with just how much I could see under dark skies. Over the next few months, I found some additional eyepieces that TV recommended (35mm Pan, 12mm Nag, 8mm Radian) and have since added to the collection. I also added a used Starbeam and the eyepiece caddy.
Of course, in time I added some other scopes (a non-SDF Gensis and C8 mounted on a GP) but the little Pronto was the scope that got used the most and I finally sold off the other two. Then I added a Questar for inner solar system use because of the drive and because I'm a fan of small portable optics (and that I always wanted one). I've kept the Questar and since added another 4" refractor (NP-101) but still, the little Pronto on its Telepod is still the scope I use the most.
Why? Well, it's ready to go in a moment, never has to cool down, shows tremendous views of the stars, doubles, brighter Messier objects (I can actually resolve outer stars in M13 under my skies), and very nice views of the moon. I have taken it to a few star parties and it has always impressed. One time, at Bryce Canyon, it was more popular than the big SCT's that were being run by the Park Service and the University of Utah. Why? Because I showed folks the Andromeda Galaxy and they could see the whole thing in the eyepiece. When they learned just what it was they saw I had them. The big scopes were likely not well-collimated and their operators were having some other troubles. Under dark skies, a small wide-field refractor is a wonderful thing and the Pronto is all that. It was pretty cool that at this particular star party, the Pronto won the night and the lines were longest at my scope vs. the big boys.
Once, I asked Al Nagler whether I should replace it with the TV-76 and he said the only reason to would be if I were dissatisfied with its lunar and planetary views. As I find the color correction reasonably good and use other scopes for those objects anyway, I've kept it all these years.
If I had to sell everything, I think the Pronto and Telepod would be the last to go. I absolutely love the whole package and find it very satisfying to own such a small, high quality, portable rig.
I know there are many other options today but Prontos often come up for under $500 now and to me, that's an absolute steal of a deal. If you've never looked through or used one you're in for a treat if you get the chance!
by Chris Greene
Once upon a time, the Pronto was quite the hit in the astronomy world. Then, as other small, high-end refractors came onto the scene, the Pronto lost its audience and favor with most but not me. Here's my Pronto story...
Some years ago, when I was getting back into astronomy for the umpteenth time, I learned about the little TV Pronto. Tele Vue referred to it as a "semi-apo" refractor, whatever that means.
I was scopeless at the time but living under fairly dark rural skies in Idaho. As I've always preferred refractors for their ease of use, I started searching around for a used one. After a time I located a green one with an included Telepod mount. It came with the 20mm TV Plossl and that was to be my only eyepiece for a few weeks. I was really impressed with the build quality and when it saw first light I was just amazed at the wide field views of the heavens even with the 20mm plossl. I was able to locate a number of Messier objects and was impressed with just how much I could see under dark skies. Over the next few months, I found some additional eyepieces that TV recommended (35mm Pan, 12mm Nag, 8mm Radian) and have since added to the collection. I also added a used Starbeam and the eyepiece caddy.
Of course, in time I added some other scopes (a non-SDF Gensis and C8 mounted on a GP) but the little Pronto was the scope that got used the most and I finally sold off the other two. Then I added a Questar for inner solar system use because of the drive and because I'm a fan of small portable optics (and that I always wanted one). I've kept the Questar and since added another 4" refractor (NP-101) but still, the little Pronto on its Telepod is still the scope I use the most.
Why? Well, it's ready to go in a moment, never has to cool down, shows tremendous views of the stars, doubles, brighter Messier objects (I can actually resolve outer stars in M13 under my skies), and very nice views of the moon. I have taken it to a few star parties and it has always impressed. One time, at Bryce Canyon, it was more popular than the big SCT's that were being run by the Park Service and the University of Utah. Why? Because I showed folks the Andromeda Galaxy and they could see the whole thing in the eyepiece. When they learned just what it was they saw I had them. The big scopes were likely not well-collimated and their operators were having some other troubles. Under dark skies, a small wide-field refractor is a wonderful thing and the Pronto is all that. It was pretty cool that at this particular star party, the Pronto won the night and the lines were longest at my scope vs. the big boys.
Once, I asked Al Nagler whether I should replace it with the TV-76 and he said the only reason to would be if I were dissatisfied with its lunar and planetary views. As I find the color correction reasonably good and use other scopes for those objects anyway, I've kept it all these years.
If I had to sell everything, I think the Pronto and Telepod would be the last to go. I absolutely love the whole package and find it very satisfying to own such a small, high quality, portable rig.
I know there are many other options today but Prontos often come up for under $500 now and to me, that's an absolute steal of a deal. If you've never looked through or used one you're in for a treat if you get the chance!
Wednesday, June 17, 2009
Cloudy (Windy and Rainy) Night Link: NYAA
If you want to jump to the next step apart from some basic get togethers and observing, you might be ready for a club that offers more, quite a bit more. Yet this group is also a down-to-earth, friendly gathering of astronomers. The North York Astronomical Association or NYAA is a great place to meet new friends, enjoy members nights/meetings, do some observing, enjoy dark sky weekends away from the city and of course be part of something super-special, an event called StarFest.
Joining your "local group" is something you won't regret.
Joining your "local group" is something you won't regret.
Monday, June 15, 2009
Observing Challenge: Delta Cygni
Located in the constellation Cygnus at RA: 19h 44m 58.52s Dec: +45° 07' 50.6", Delta forms the tip of the western portion of Cygnus the Swan's wing and is very easily placed in the night sky for routine viewing in June around 10:30pm and onward. Oddily enough, given the 2.7 magnitude, Delta lacks a proper name. Around 11,250 AD, Delta will be the North Star.
In a quality 3-4 inch Refractor, you should be able to resolve Delta into two distinct pairs.
The challenge here of course is the magnitude differential in the companion. It is a mere 6.3 magnitude. The Antares 105mm Refractor split this without a whole lot of effort in the 223X power range but became very apparent when that image was barlowed to 447X. Generally, this would be a difficult power to work with, but the steadiness was slightly above average. At this power, the companion lay outside the first concentric ring in the Refractor.
Good luck and let me know if you were able to split it!
In a quality 3-4 inch Refractor, you should be able to resolve Delta into two distinct pairs.
The challenge here of course is the magnitude differential in the companion. It is a mere 6.3 magnitude. The Antares 105mm Refractor split this without a whole lot of effort in the 223X power range but became very apparent when that image was barlowed to 447X. Generally, this would be a difficult power to work with, but the steadiness was slightly above average. At this power, the companion lay outside the first concentric ring in the Refractor.
Good luck and let me know if you were able to split it!
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