To correct an inverted image, you will need a 90° diagonal lens. When a 90° diagonal is used, the mirror flips the image over, giving a right side up but reversed left to right image. You can achieve a fully corrected image using an erect image prism diagonal.
These image converters are available from Nipon Scope online store.
Saturday, 15 February 2014
How to determine a telescope's magnification?
The magnification of a telescope changes as the eyepiece is changed. Magnification can be calculated by dividing the focal length of your telescope by the focal length of the eyepiece.
Calculating magnification = Telescope's focal length / Eyepiece focal length
Always start with your lowest magnification eyepiece (longest focal length) and work upwards from there.
A 2x Barlow lens will double the magnification of whatever eyepiece you use with it while preserving its eye relief. For example: using a telescope with a 800 mm focal length with a 16 mm eyepiece will give you 50x magnification. Using the same telescope and eyepiece with a 2x Barlow lens will give 100x magnification. This would be the same magnification as a 800 mm telescope with a 8 mm eyepiece.
Calculating magnification = Telescope's focal length / Eyepiece focal length
Always start with your lowest magnification eyepiece (longest focal length) and work upwards from there.
A 2x Barlow lens will double the magnification of whatever eyepiece you use with it while preserving its eye relief. For example: using a telescope with a 800 mm focal length with a 16 mm eyepiece will give you 50x magnification. Using the same telescope and eyepiece with a 2x Barlow lens will give 100x magnification. This would be the same magnification as a 800 mm telescope with a 8 mm eyepiece.
How far can I see with a telescope?
The farthest you can see in the sky with your telescope will depend on its ability to gather light and where you observe.
The most distant objects visible with amateur-sized telescopes are faint galaxies and the brightest quasars. They will be brighter and easier to see in a telescope that gathers more light and has a greater magnitude limit. Here bigger is better and a larger aperture scope will see more remote objects.
Location is also important. Even with a big telescope, you’ll see fainter, deeper and farther out into the universe from an isolated dark-sky site than from the heart of a megalopolis. For example: quasars are all very faint as seen from the earth. The brightest one is 3C 273 in Virgo. It is magnitude 12.9. A good 4-inch scope is capable of seeing it in dark-sky conditions. You’ll need a larger scope to be able to see it at all from a city.
The most distant objects visible with amateur-sized telescopes are faint galaxies and the brightest quasars. They will be brighter and easier to see in a telescope that gathers more light and has a greater magnitude limit. Here bigger is better and a larger aperture scope will see more remote objects.
Location is also important. Even with a big telescope, you’ll see fainter, deeper and farther out into the universe from an isolated dark-sky site than from the heart of a megalopolis. For example: quasars are all very faint as seen from the earth. The brightest one is 3C 273 in Virgo. It is magnitude 12.9. A good 4-inch scope is capable of seeing it in dark-sky conditions. You’ll need a larger scope to be able to see it at all from a city.
Sunday, 15 July 2012
When using an adaptor direct from camera body to scope, is it possible to shoot in auto focus or do you use manuel (i.e. F stops)? I would appreciate some advice (question from JE)
Hi, thanks for your enquiry. You would need to set the camera to manual mode when the camera lens is removed, as part of the auto focus function is achieved through the lens system.
Saturday, 10 March 2012
Could you please tell me what would be a better telescope for looking at stars, the moon, etc.?
For stargazing/astronomical observations, we recommend the telescopes that are specially designed for astronomy, such as NIPON 700x60 refractor astronomy telescope (entry level), NIPON 800x60 refractor telescope (better/more powerful model), or 900x114 telescope (more advanced model).
Running NIPON EE300 digital eyepiece under Windows XP system
This upgraded digital device should work straight away under the updated windows XP system, so there is no need to install anything from the CD (some of the information on the printed sheet can be related to previous versions of the windows systems). Just plug the device into a USB slot, and then open "My Computer". You should see a camera icon on the hardware list. Double click that icon, you can see the image viewing window. This is what you see through the telescope. You can take pictures using the button located on the top-left manual bar of the computer screen.
For video recording, you can install the driver by following steps 3.4 & 3.5 of the User Manual (skip step 3.3). Note: if you use a laptop that has a built-in webcam, there can be a conflict between the existing software for the webcam and the new video driver you try to install. Check to see if you can share the webcam software with the digital eyepiece, or use a computer that does not have a built-in camera system (this is related to video recording function under Win XP only. You don't have this issue with Win 7).
For video recording, you can install the driver by following steps 3.4 & 3.5 of the User Manual (skip step 3.3). Note: if you use a laptop that has a built-in webcam, there can be a conflict between the existing software for the webcam and the new video driver you try to install. Check to see if you can share the webcam software with the digital eyepiece, or use a computer that does not have a built-in camera system (this is related to video recording function under Win XP only. You don't have this issue with Win 7).
Compact Barlow lens - A new design by Nipon Scope & Optics
A newly designed compact Barlow lens has become available at Nipon Scope & Optics.
This compact Barlow can be fitted to the end of a standard 1.25" eyepiece to increase the overall image magnification by 3 times. It consists of two parts, a compact Barlow lens (with M30x0.75mm thread) and an eyepiece adapter tube (with M28.5x0.75mm thread). This enables the Barlow to be compatible with 1.25" eyepieces with either inner barrel thread.
This compact Barlow can be fitted to the end of a standard 1.25" eyepiece to increase the overall image magnification by 3 times. It consists of two parts, a compact Barlow lens (with M30x0.75mm thread) and an eyepiece adapter tube (with M28.5x0.75mm thread). This enables the Barlow to be compatible with 1.25" eyepieces with either inner barrel thread.
The design of this compact Barlow lens ensures a perfect alignment between the centre of the Barlow lens and the eyepiece.
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