Image of the day

Captured by
Craig Bobchin

Coathanger CR 399

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Matthew Sherman

February 18, 2003 10:16 PM Forum: Equipment Talk

(sigh) I need to place an order...

Posted By Matthew Sherman

Ummm... Hello?

Is this the place to order some starry nights? It's been so cloudy lately, and we have the Messier Marathon coming up.

I'd like to order the starry nights combo...TO GO..., two large gas giants, and a side of transparent skies. Can you supersize that? And I'll take one of those new moon pies for dessert. Oh! And and throw in a Milky Way and a Virgo cluster too.

Thanks!

Matthew Sherman
NGC ME!



February 18, 2003 10:18 PM Forum: Deep Sky Observing

(sigh) I need to place an order...

Posted By Matthew Sherman

Ummm... Hello?

Is this the place to order some starry nights? It's been so cloudy lately, and we have the Messier Marathon coming up.

I'd like to order the starry nights combo...TO GO..., two large gas giants, and a side of transparent skies. Can you supersize that? And I'll take one of those new moon pies for dessert. Oh! And and throw in a Milky Way and a Virgo cluster too.

Thanks!

Matthew Sherman
NGC ME!



September 11, 2003 05:39 PM Forum: Equipment Talk

CG-5 question

Posted By Matthew Sherman

Hi all,

I am considering purchasing one of the new CG-5 Advanced Series mounts for use with my 5" Mak, and my 8" f/5 Newtonian. I'm pretty confident that the CG-5 is plenty adequate for the 5", but what about the 8" Newt? It's probably 18 - 20 lbs with rings, finder, and eyepiece. Does anyone here have a similar setup? What is your overall impression when it comes to vibration and dampening? How
about digital camera photography on planets? Is the 8" too much? Thank you for any input or thoughts on alternative mounts.

Regards,

Matthew Sherman
NGC ME!

December 21, 2003 10:34 PM Forum: Equipment Talk

Sirius Optics Variable Filter System

Posted By Matthew Sherman

Hi there,

Does anyone have an opinion about this product? I've done some searching around and really haven't found anything to sway me either way. Does anybody swear by it? Anyone think its a rip off? Your thoughts are appreciated.

Regards,
Matthew Sherman

March 15, 2004 07:32 PM Forum: Binoviewers

Interesting little (re)discovery

Posted By Matthew Sherman

Hi all,

Something that I noticed quite some time ago when I started using my binoviewer, was that ambient lighting in my peripheral vision is more noticable. It probably has something to do with the fact that 1) my head is at a different angle allowing more periphery to be visible, and 2) because I am using two eyes, I percieve double of everything.

The other night I decided to bring out my light shroud. You know, the kind you put over your head. I don't use it much becuase I never really got comfortable with it in the past.

With a Dobsonian, the binoviewer sticks out the side quite a bit. I found it very comfortable and convenient to have the shroud on my shoulders and head, allowing the rest of it to just hang, draped over the binoviewer body. So much for my ambient light problem! Occasionally, I would reach under the binoviewer to grab the two hanging sides of the shroud and pull them together so that I could not see the ground below. Talk about a little darkroom!

I was examining the faint open cluster in the background of M35, NGC 2158. I wanted to know just how much I could get this object to resolve with my binoviewer. I was pleasantly surpirsed. The highest magnification I used was 357x, a combination of my mediocre dark site and an 18" Starmaster TV BV with 2x corrector and a pair of 11mm Nagler T6. The first thing I noticed was that the cluster was irregular in shape (somewhat like a parallelogram) with edges that were easy to detect. Within the boundaries of these edges, were a myriad of faint, similarly bright stars. An uneven chain of brighter stars (4-5?) crossed the face of the cluster. What I couldn't see is any of the stars in the cluster's halo (the stars that would give the cluster it's roundish appearance). That proabably is a result of my rural, but still somewhat light polluted dark site, and I didn't really give it a chance by trying to use averted vision like I should have. I'm going to have to take a picture of the cluster out into the field with me this weekend because I want to compare what I see in the scope with some of the brighter stars in the vicinity of the cluster to see if I can resolve any of the stars in the cluster's halo.

I thoroughly enjoyed using my little shroud to help me examine a familiar object in greater detail. It's always fun to "rediscover" an object by looking at it in a new way.

Matthew Sherman
NGC ME!

August 29, 2004 06:27 PM Forum: Binoviewers

I have a beef...

Posted By Matthew Sherman

All,

I have a beef with the term "cyclops mode" that has become increasingly popular in our little binoviewing sub-culture. I believe that the term is demeaning to people who do not, or worse, cannot afford to purchase a binoviewr let alone double up on sets of eyepieces.

The term "Cyclops mode" is not used by the majority of people practicing observational astronomy today. Most of the people who use telescopes simply look through an eyepiece just like you used to do. They call it "looking through an eyepiece". By using the phrase "cyclops", particularly the way I have seen it written in posts, it comes across as separatist, conveying the opinion that you would never go back to such a thing. Binoviewing may be more comfortable, but you are not seeing more that you would otherwise, so why imply it with a specific term?

I have a lot invested in binoviewing equipment and eyepiece pairs, but I do not do not use my binoviewers exclusively. I have many thousands invested in TeleVue Nagler eyepieces, which some may consider THE superior brand of choice, but I would never refer to using another brand or style with a phrase that conveys a derogitory image like cyclops does.

Just because people use narrow field eyepieces doesn't mean they are in "narrow-minded mode" since their brains happen to be perceiving a narrower field of view does it? If you looked down into someone's eyepiece case and saw a whole collection of eyepieces that you know are on the inexpensive end of the scale, you wouldn't say, "Oh, I used to use them *cheap-o* eyepieces too," would you? You'd probably feel pretty bad if you found out that was all your fellow astronomer could afford with no prospects of improving them any time soon.

I think that if we are going to post our thoughts and comparisons about the binoviewing experience, we should refer to not using the binoviewer as, "looking through one eyepiece." Same as it ever was.

Respectfully,

Matthew Sherman
NGC ME!

September 9, 2004 02:20 PM Forum: Binoviewers

Observing with Elite 40's

Posted By Matthew Sherman

Hi all,

A unique opportunity presented itself last night in that I was able to check out three different binoviewers at the same time. We were using a well-collimated Celestron Nexstar 11” SCT under rural suburban skies. Because we were using a catadioptric, we did not need optical correctors to achieve focus. On deck were a late model Televue, a standard Denk with Power X Switch, and a pair of HS Elite 40’s.

The reason I am writing this is because I was really anxious to get my hands on and view through the Elite (or any of the new HS offerings). When I found out that this gentleman was brining them to my friend’s observatory in rural Chicagoland from St. Louis, MO, I just had to be a part of this little gathering.

Before the gentleman arrived with the Elite, my friend and I did some comparisons between my TV and his standard Denk. Using my friend’s SCT and his Vixen wide-field eyepieces we looked at open and globular clusters. We were looking and comparing views of stars that were right on the edge of detection. The views were very close with a nod to the TV because it exhibited more contrast. Stars that needed averted vision to see in the standard Denk were visible directly or “nearly directly” in the TV.

When the Elite arrived, it stole the show. This isn’t your typical floor model binoviewer, this is a custom, hand-crafted optic. It’s huge, but so very light. It has self-centering eyepiece holders that both turn very smoothly and grip very well. To adjust eyepiece separation, only one side moves but I had no problem getting used to that at all. It was intuitive and easy to adjust. Did I mention the Elite was huge? My friend was pointing out something about the positioning of the mirrors on each side and I noticed that the inside of the Elite was very dark. I was curious about what the build quality and mechanical operation was going to be like and I was pleased to find out that this binoviewer is rock solid. The machining is smooth, clean, and attractive. It was a joy to work with.

Observing with the Elite, I could not detect anything that concerned me, but I feel I would have to do more testing under darker skies to give my best, most objective opinion of optical quality since that is where I am most accustomed to using my binoviewers. None of us had problems merging the images using HS 2” 36mm and 19mm wide-field eyepieces. The stars were perfectly focused points of light from one edge of the field to the other. In one field, we had a bright star centered to demonstrate collimation for our St. Louis guest (Antares I believe) and we saw ghost images of a few field stars floating at the top of the field of view. On everything we observed including doubles, galaxies, planetary nebulae, globs, and open clusters, the Elite performed exactly as a binoviewer at this price point should: famously. In the rural suburban conditions we were observing in, the Elite was the winner by consistently presenting the brightest, most detailed images.

I’ve been using binoviewers for a couple of years now, and I have an idea of what they are capable of with a variety of scopes including my own 12.5” and 18” Dobsonians. Now that I’ve had the opportunity to use a pair of the new Elites, I’m happy to report that they are worthy of your consideration as a premium class binoviewer.

Matthew Sherman


February 4, 2005 05:32 PM Forum: Binoviewers

Re: Denkmeier review in S&T

Posted By Matthew Sherman

I always take reveiews where there is one reviewer, with one piece of equipment being reviewed, with a grain of salt. Particularly on mass-produced "things" some less-than-satisfactory-units are bound to hit the marketplace. But if multiple reviewers with multiple units test and find some common defect(s), I'd put more stock in the possibility of getting a bad one myself. That's the way I look at reveiws.

Matthew Sherman

April 3, 2005 12:04 AM Forum: Coronado-Lunt-DayStar Solar Filters

Hello out there...

Posted By Matthew Sherman

Just noticed that there have been no posts since March 23. Guess H-alpha was just another fad.

April 3, 2005 12:05 AM Forum: Binoviewers

Just a fad...

Posted By Matthew Sherman

No posts since March 21. So binoviewing _WAS_ just a fad.