I begin with a reply to the first reviewer. It's not the eyepiece. The rule is about 30-50x (power) per inch of aperture. The largest Celestron Powerseeker refractor aperture is 80mm or just over 3". If you have the 80mm version, your maximum power on a night of good seeing is @150x. (If you have a smaller aperture version, it's even less.) Powers much larger result in fuzzy, dark images such as you describe. The scope's focal length is 900mm. Focal length of scope divided by focal length of eyepiece gives magnification/power. 900 divided by 4 is 225; 50% stronger than you scope can handle, again, assuming you have the 80mm version. A 6mm eyepiece would give you your maximum power. Smaller aperture, less.The Plossl design is simple and efficient. Four elements which give good to excellent sharpness and light transmission. I have lots of them from Tele Vue, GSO, Meade, Astromania, Gosky and more obscure manufacturers. Some are "fully coated", some are "multicoated" and some are "fully multicoated".They range in price from $15 to over $100 and from purchase dates from a few days ago to the late 80s. Every one of them works very well; very difficult to tell them apart once they are in a scope. My scopes are two dobsonians, 13" and 8" both f4.5, and a 120mm f5 refractor. As long as the eyepiece is not too powerful for the scope's aperture, the views are crisp and contrasty. Only problem is that of eye relief when you get below about 12mm. And I have a raft of much more expensive, multi-element, wide-field eyepieces with much better eye relief which get a lot of use. But all but a very few of them are not one bit sharper than a Plossl and far too many of them are not quite as. Sharp, that is.So in short, if you aren't getting decent results from your eyepiece, check your collimation and then do your math. The best scope in the world still has to obey the laws of optical physics. As for Astromania Plossls, in my experience they are really good and really, really cheap. Really.
Dingsun SVideo To HDMI Converter: 3RCA AV Support 1080P/720P Compatible With WII U, PS2/PS3, STB, Xbox & More!
43 Review
2 Pack Battery And Charger Kit Bundle For Olympus Tough TG-Tracker, TG-5, TG-2IHS, TG-3, TG-4 Waterproof Digital Camera Includes 2 Replacement (1500Mah) LI-90B, LI-92B Batteries + Charger + More
43 Review
Fitbit Versa 3 Smartwatch Replacement Band: TOYOUTHS Elastic Nylon Fabric Strap For Women & Men
50 Review
Effortlessly Navigate Your Laptop Or Desktop With The Perixx PERIPAD-501 Wired USB Touchpad
27 Review
VAULTEK VS20I Biometric Handgun Safe With Auto-Open Lid, Bluetooth 2.0 And Rechargeable Battery (Biometric)
5 Review
🔒 Improved Geek Smart Door Lock - Keyless Fingerprint & Touchscreen Digital Lock, Secure Bluetooth, Easy Installation, Ideal for Airbnb, Hotels, Offices, Apartments, Homes | Upgraded 3.0 Version, Black
3 Review
DDSky USB Fingerprint Reader One-Pack - Portable Biometric Scanner for Windows 10 with Enhanced Windows Hello Features
3 Review
Identicator Fingerprint Systems 1007333 Cardholder
3 Review