List Price :
$477.95Price : $299.95
Code : B003VRUGRG
* Special discount only for limited time
Product Feature
- Stand-Alone autoguider eliminates need for laptop
- Sensitive CCD sensor allows you to track on fainter stars
- Large chip area for locating and keeping guide star on chip
- Battery pack provides free and unrestriced use in the field
- 9-Button hand control for quicke access to menus
Product Description
Introducing Celestron's newest edition for your astrophotography needs, the NexGuide autoguider! This easy to use, stand alone autoguider eliminates the need for a laptop computer in the field and is perfect for imaging with your DSLR camera. The sleek design of the NexGuide camera attaches easily to your telescope and has a built-in LCD display that is ideal for tracking long exposure photography. NexGuide is equipped with a sensitive CCD chip and a large imaging sensor, 5.6 x 4.7 micron pixels, for highly accurate guiding and locating. This smart autoguider automatically sets guiding aggressiveness and calibration of each axis to save you time in the field. It has an easy to use interface and illuminated button hand control so you can quickly navigate through the menu options. NexGuide creates an effortless and enjoyable astrophotography experience! Stand-Alone autoguider eliminates need for laptop. Sensitive CCD sensor allows you to track on fainter stars. Large chip area for locating and keeping guide star on chip. Battery pack provides free and unrestriced use in the field. 9-Button hand control for quicke access to menus.
Product Detail
- Brand: Celestron
- Model: 93713
- Dimensions: 3.80" h x6.10" w x9.30" l,2.00 pounds
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14 of 14 people found the following review helpful.
Does the job nicely...
By Tom Hannigan
...depending on where you are and what you are using. First of all, it's actually a good idea to own one of these guiders ( as I do) before writing reviews based simply on specs.
This is the answer for all of us out there who image in the field and don't want to lug a laptop there. The idea of having to transport one less large battery, table, chair, and all the rest of it is simply delightful. If you use a DSLR and want dependable autoguiding for 5 minutes and more, this is your answer. I have used this through a cheap 60mm /350mmfl Meade guiding a C8 at f/6.3 and it worked just fine.
It's shortcoming is picking up fainter stars- especially if you live in a light polluted area. Guidescope rings that are adjustable are a must. I was actually using a Celstron camera adapter the first few nights, but you really need the ability to search a little bit for a suitable guide star. I haven't used it yet under dark skies, and I think the Nexguide's performance will improve drastically in that regard. In all other aspects, I am completely pleased. This received an excellent review in a recent Sky&Telescope article.
10 of 12 people found the following review helpful.
Ok. but not accurate enough for prime focus.
By BlogKindle.com
Although it may be nice to be able to autoguide without a computer, this particular unit doesn't deliver.
It doesn't support sub-pixel guiding so guiding is very coarse. When attached to 400mm scope (which is a lot for a guide scope) it provides 5.6 arcsec guiding accuracy. DSLR pixel size when shooting prime focus on 2000mm FL telescope is 0.66 arcsec. So you get an error of 8 pixels. This effectively reduces resolution of a high end DSLR to about 1MP.
Do yourself a favor and get a computerized autoguider that can do sub-pixel tracking.
2 of 2 people found the following review helpful.
Works but has serious limitations
By danno
Ok, bought this back in June to use for field astrophotography work. Since I intend to use my field kit for backpacking, minimizing the number and weight of the bits and pieces is a must. So, the idea of getting rid of the laptop for guiding intrigued me. I am using it with a 400mm f5.8 cheap scope to guide my camera and various lenses, from 12mm to 200mm, using an iOptron Cube Pro mounted on a photo tripod.
Now, the pros:
- easy to set up
- can see stars down to about mag 6-7 even in my light polluted back yard.
- Once properly calibrated (and the mount properly balanced and aligned), it can guide fairly well, within its specs.
Cons:
- Teeny tiny screen! And half of it eaten up by text. With my weak eyes, even with reading glasses it's impossible to see all but the brightest stars at level 1 zoom. I now often resort to blind luck (pun intended) by centering the star in the ep and using auto select.
- And speaking of the screen and auto select. My guider has developed two hot pixels, probably in the sensor. Unfortunately, those end up being brightest in the field of view, so unsurprisingly, the guider selects them every time if you choose auto select. There is NO provision for dark frame subtraction. This is poor sofware design at the very least. Fortunately the hot pixels are towards the edge, so when going to level 2 zoom they go out of the frame, and auto select works much better. It still tends to select noise instead of a seemingly brighter star sometimes, which is annoying.
- Button layout is a bit strange. Unlike all other Celestron products, the enter (or OK) button is off to one side, very unergonomically located. It should be in the center of the arrow keys. The meny button is also awkwardly located.
- Screen menus. Not very easy to navigate, and I don't know if the buttons are to fault, but sometimes the whole thing is unresponsive. Also, if you start a guiding calibration, there is no way to cancel it except by pulling off the power plug. Not very user friendly.
- No subpixel guiding. Yes, this is mentioned in other places too. Not a big problem if the guiding is matched to imaging (for example, a 400mm fl guidescope is a decent match for a Canon 1000D and 200mm lens) but otherwise you're asking for square stars.
- One last thing that is missing, which would make star selection much easier imo. At zoom levels above 1, you cannot pan around the sensor image. It would make it so much easier if you could select say level 4, then pan around the frame looking for stars... much easier to see the fainter stars then. An easy software fix imho.
Is it worth the price? If you're strapped for space/weight then right now there's no better alternative. Otherwise, if a laptop bulk is just an inconvenience, I would seriously consider one of the smaller Acer ones, which is what I used to use.
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