HDSR Star Party 2024 - Mumbai to Leh 9/28

Houston Museum of Natural Science

NASA Astronaut Col. Brian Duffy giving short talk at Houston Space Center

My 6 Inch F/8 Handmade Newtonian Telescope - Hindi

Hartness Porter Museum at the Hartness House, VT

Hartness House - Underground Tunnel to the Museum

At the Pink Clubhouse - Stellafane Convention 2023

Spectrohelioscope - Stellafane Convention 2023

How Porter’s Turret Telescope Works - Stellafane Convention 2023

Truss type compact travel scope. 5" F/7.

Truss Mount CNC Cutting for Small Telescope

Jupiter through my telescope @astrokhan

Telrad Reflex Sight/Finder Scope unboxing (Hindi)

Pentax XW 7mm Eyepiece Unboxing (Hindi)

DoB mount CNC cutting

How to Cut PVC Pipe Straight or Right Angle

Dong Cheng DMP02-6 Router/Trimmer Unboxing

Visualizing Thermal Air Currents in the Foucault Testing

Foucault Testing 8-inch F/6 (18Jan22) - English

Understanding Ronchi Test - English

Toughened vs Plain/Plate Glass

Understanding Ronchi Test - Hindi

Ronchi Test Setup

Foucault knife-edge Test Setup - Hindi

Jupiter with 4 moons

Saturn 20/10/2021

Jupiter surface details

Saturn through my 6" F/8 telescope

12 Inch F/5 Mirror Grinding with #60 SiC

Samsung Galaxy M21 Unboxing and Short Review