Celestron 31042 AstroMaster 114EQ Newtonian Reflector Telescope, Dark Blue
FREE Shipping
Celestron 31042 AstroMaster 114EQ Newtonian Reflector Telescope, Dark Blue
- Brand: Unbranded
Description
Why is this a problem? The focuser moves to accommodate different eyepieces and different eyes. Thus, the corrector lens could never have a chance of actually correcting for spherical aberration–it only corrects at one specific distance from the primary mirror. Although the correctors in these Bird-Jones don’t seem to be actual correctors anyway, merely Barlow lenses which increase the effective focal length of the telescope. The colors and contrast were ok compared to other Newtonians of the same aperture range but I wouldn’t say they were the best. The images resolved by the AstroMaster 114EQ are bright and sharp. I did not detect any spherical aberrations or other types of manufacturing issues. Important safety note: inspect your filter before every use. Do not use and discard if damaged, torn, punctured, or separated from the frame in any way.
Accessories include a 20mm and 4mm eyepiece, a finderscope, and a barlow lens. The two eyepieces offer different magnifications for low and high powered views. The 3x Barlow lens triples the magnifying power of each eyepiece. The AstroMaster accessory kit, which includes a 2x Barlow (not a very good one, but much better than the 50 cent one that comes with many of the PowerSeekers and AstroMasters), a 9mm eyepiece (again redundant with the 10mm), and a 6mm eyepiece, which is actually a good idea for planetary viewing, although it will be uncomfortable to use if you wear glasses due to its small eye lens. It also includes the same filters as the PowerSeeker’s kit. The 6mm eyepiece, when doubled with the Barlow produces a magnification of 333x, which is way too much for this telescope. But the 6mm alone produces a reasonable 167x, which is good for planetary detail that might otherwise be elusive. If you decide to buy it, it will probably last you for a long time, and you’ll be quite happy with it. Looking down the optical tube, we see the mirror (unpolished at the edges) and the corrector lens and eyepiece reflected in the secondary mirror.Read on for my full review. Celestron Astromaster 114 review What are you buying? 1. 114mm reflector telescope The Sky-Watcher Heritage 130P, essentially the same telescope as the Z130 but with a collapsible tube. Mercury, Uranus, and Neptune will be visible but will look just like colored dots. These targets are hard to get any detail from even for professional telescopes. Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
As originally designed by Bird and Jones, this catadioptric design uses a spherical primary mirror with a corrector lens just before the secondary mirror. This design allows for the secondary mirror to be shrunk down, the primary take the shape of a sphere that is easy to make (cheap), and allows for a stout and stubby telescope that has a long focal ratio and next to no coma. At the time the Bird-Jones was designed, eyepieces were simple and coma correctors were nonexistent, so focal ratios tended to be on the long side to achieve sharp images. Mix distilled water with isopropyl alcohol – which is a over the counter medication in the same ratio to clean the optics. This is an amazing telescope for astrology hobbyists. It allows you to enjoy the pristine view of the star-studded night sky. This is a beginner level telescope. New astrologers get the first breathtaking experience of watching other planets of the solar system through Celestron Astromaster 114.
Our Contact Details
Collimating a Newtonian telescope is not hard. Once you get the hang of it, it will take you 5-10 minutes. But for a complete beginner, it can be challenging and frustrating because you just want to use your brand-new telescope. The PowerSeeker accessory kit, which I actually got (and still use), contains a 15mm Kellner, a 9mm Kellner, and three filters: an #80A light blue filter, a #25 dark red filter, and a cheap dark Moon filter, which I never use and you don’t need. The 15mm eyepiece is a nice middle-ground between the 20mm and 10mm, but the 9mm is redundant when paired with the AstroMaster’s 10mm. The 80A filter is actually quite useful for bringing out details on Jupiter, Saturn, and Mars.
- Fruugo ID: 258392218-563234582
- EAN: 764486781913
-
Sold by: Fruugo