Image Analysis Program :: essays research papers

Purpose to become familiar with the im jump on analysis syllabus and to develop an understanding to the size and age of planetary nebulaeProcedureThe first part of the experiment involved using a picture of a church building and back round to understand different pixels, ADU, zoom, and how to get the (x,y) coordinates. We then took this brief understanding of pictures and applied it to the stars. We loaded a picture of nebulae m42. After this we necessitate to number the average number of stars or solar mob. We found the (x,y) coordinates of a position in the center of the nebulae and on the edge of the nebulae. We used the following distance decree to find the distance between the points.After this calculation the answer in pixels take to be converted to arc seconds for use in the small fish formula where 1 pixel approx. = 3 arc seconds. We now could use the small angle formula to find the actual radius in pc. Where d is the radius D is the distance from the Earth in pc and theta is the value we had just found out in arc seconds.After the calculation we needed to convert pc to meters so we used the calculation factor of 1pc=3*1016m Now we needed to find the density. Density was figured out by multiplying the majority substance in the nebulae (hydrogen) per cubic m3 by the mass of hydrogen in kg, which gave us the formulaWe then had the info we needed to find the mass of the nebulae. We calculated this by using a spherical shape for ease of calculation. We used the following formula where m is the mass p is the density and r is the radius found above from the small angle formula (d).Now that we had the amount of mass we needed to find the solar masses so we divided the mass of the nebulae by one solar mass unity in the following equation.Our next part of this lab was to find the age of the nebulae m57 .We used the same formula and procedure as before to find the radius of the star. The distance from Earth was given to us to complete the small holy man formula. We then needed to convert from the au to km by the following equation.We were told the expansion of the nebulae to be 20 km/s and assumed this had been going on since the birth of the nebulae for simplicity of calculation.