RESOLVING POWER OF A TELESCOPE
Item Code : SED1005
Principle and Working:
The resolving power of a telescope is defined as the reciprocal of the smallest angle subtended at the objective lens of the telescope by two point objects that can just be distinguished as separate. The resolving power of a telescope is given by:
Where,
λ = 589 nm (mean wavelength of light used)
D = Distance of the objects from the objective lens of the telescope.
d = Distance between two consecutive slits or objects.
a = Critical width of the rectangular slit required for just resolving two slits or objects.
- Modular approach
- Orientation and Height of Sodium Light source is adjustable.
- Bridge type microscope can be used vertically and horizontally.
- To determine the resolving power of a telescope.
- Type : Bridge type microscope.
- Main scale : Range 0 -170mm, 1 MSD 0.5mm.
- Vernier LC : 0.01mm.
- Magnifier : FL 50mm, dia. 25mm.
- Eyepiece : Ramsden 10X.
- Objective : 3X.
- Lamp (sodium) : Mild Steel, 200 x 85mm (LxØ), slit Ø 13mm.
- Lamp power : 20W, input 220V AC.
- Reflector ass. : PVC, 105 x 100 x 110mm.
- Fuse : 2A.
- Rotation : 120 x 80 x 1.2mm.
- Lens housing : 80 x 38mm(Øxh).
- Micrometer slit : Range 0 – 3mm, LC 0.01mm.
- Telescope : Eyepiece 10X, Slide type (Focussing), 10mm dia. Mounting rod.
| S.No. | Item Name | SED1005 |
|---|---|---|
| 1 | Slit-A | 1 |
| 2 | Slit-B | 1 |
| 3 | Slide Holder | 1 |
| 4 | Travelling Microscope | 1 |
| 5 | Cylindrical Base | 1 |
| 6 | Micrometer Slit for Spectrometer | 1 |
| 7 | Sodium light source | 1 |
| 8 | Power supply for Sodium Light | 1 |
| 9 | Power Cord (Main Lead) | 1 |
| 10 | Stand Base (A Shaped) | 1 |
| 11 | Sodium Bulb (35W) | 1 |
| 12 | Boss Head Square (Universal Clamp) | 1 |
| 13 | Clamping Rod | 1 |
| 14 | Stand Rod | 1 |
| 15 | Measuring Tape | 1 |
| 16 | Reading Telescope with Stand & Rod | 1 |